N, N - Diisopropylethylamine ( DIPEA ) was prepared from diisopropylamine ( DIPA ) and diethyl sulfate ( Et _ 2 SO _ 4 ).以二异丙胺 ( DIPA ) 、硫酸二乙酯 ( Et2SO4 ) 为原料合成N, N二异丙基乙基胺 ( DIPEA ).RP - HPLC absolute calibration curve me...

Several hundred soldiers have been seconded to help farmers.数百名士兵被临时派去帮助农民。The city of Chengdu lies some seven hundred miles to the South-East.成都市位于东南方大约 700 英里处。A barge was about a hundred yards away, waiting to return ...

Infected mandibular, parotid and anterior cervical nodes usually cause subcutaneous induration and surface bulging.感染的下颌, 耳下和颈前淋巴结,通常引起皮下硬结和表面突起.THE INFLUENCE OF DENTAL FACTORS TO ERUPTION OF THE MANDIBULAR THIRD MOLAR.牙...

到处黑乎乎,只是还能依稀听得见那边欢闹的声音.It was dark and you could just barely hear the noise of the celebrating.我觉得随着沆瀣一气的欢闹的高涨,他也变得越发端庄了.It'seems to me that he grew more erect as the fraternal hilarity increased.特里: 噢,不错, 我喜欢他. 他是一...

Flexure scratched the head, said that here thing was expensive, discounts?挠挠头, 说这里东西都贵, 打折 吗 ?The flexure hinge mechanism is the key part of the inchworm type of X - Y - θ micro stage.工作台的核心部件柔性铰链传动机构采用对称设计,有利于运动的 导向.A s...

The curtains screen out the sunlight.窗帘遮住了阳光.Maybe he can't screen out bottom return.说不定他无法鉴别水底的反射信号.To screen out extraneous thoughts, he closed his eyes and drew a deep breath.为了摒弃种种杂念, 他闭上眼睛,深吸了一口气....

Fix plastics base and metal base on the metope with ST 4.2 screws.用ST4.2螺丝将塑料底座和金属底座一块固定在墙面上.Metope cost component: Have two shares.2墙面造价组成部分: 有两部分....

Hello Freddy, it's only me, Maxine.你好,弗蕾迪！是我,玛克辛。Maxine: Oh , yes . She was green - eyed. It really spoiled her evening.玛克辛: 有, 她妒忌得很. 这扫了她一晚的兴头.The meeting was organised by Congresswoman Maxine Waters.会议由众议员玛克辛·沃特斯...

Such attitudes are the product of woeful ignorance.这样的态度是极度无知造成的。She displayed a woeful ignorance of the rules.她对这些条例表现出可悲的无知。Stroeve gave me a look with his woeful eyes.施特略夫用他那对愁苦的眼睛瞪了我一眼....

It is compulsory for all motorcyclists to wear helmets.所有骑摩托车的人都必须戴头盔，这是强制性的。motorcyclists with leather gauntlets戴着皮护手套的摩托车手The motorcyclists rammed down the highway.摩托车手们沿着公路飞驰而去....

Some of these composers were Beethoven, Schumann, Chopin, Mendelssohn, Wagner and Tchaikovsky.有些作曲家是贝多芬, 舒曼, 肖邦, 门德尔松, 瓦格纳和柴可夫斯基.The duality of classicism and romanticism - a peculiarity of Mendelssohn's piano music...

Madagascar's ecosystems range from rainforest to semi-desert.马达加斯加生态系统类型多样，从雨林到半荒漠等不一而足。Madagascar is the most fascinating place I have ever been to.马达加斯加是我去过的最迷人的地方。Some time ago, however, a peculiar fish was caugh...

那男孩用他的指头挖凿出洋娃娃的眼睛.The boy gouged out the doll's eyes with his fingers....

They had to evict some gypsies today and I had to go and fence the area off.他们今天必须驱逐一些吉普赛人，我得去把那个区域圈起来。Gypsies frequently transmit recipes orally within the family.吉普赛人经常以口头形式把秘方世代相传.Gypsies make difficult friends for or...

Macdonald accepted that such information could be used to manipulate, to obfuscate, and to mislead.麦克唐纳相信这样的信息可以用来操纵舆论，蒙蔽误导。Ethiopia rejected the verdict, and has since used diplomatic verbiage to obfuscate and stall.Eth...

FDA ( USA ) approved for reducing snoring and mild obstructive sleep apnoea.有助于减少打鼾及轻微的睡眠呼吸暂停症.Does beta - blocker treatment influence central sleep apnoea?受体阻滞剂对中枢性睡眠呼吸暂停综合征有效 吗 ?Excessie daytime sleepiness ( EDS ) is n...

How can anyone get so drunk on one and a half martinis?怎么会有人只喝一杯半马丁尼就醉了?And they all play on the course and drink their martinis dry.他们都打高尔夫球,喝无果味马丁尼酒.Christmas morning for him is all about martinis and valium.圣诞节的早晨对他来说...

We have our native inborn talent, yet we hardly use it.我们有天生的才能，但我们却几乎未曾使用过。When Alfred Adler first postulated in 1908 that there existed an inborn instinct of aggression Freud argued against it.当艾尔弗雷德·阿德勒于1908年首次提出人生来就有...

All things existence and changement depend on the intersection and coincidence between the YingQi and YangQi.万物的生存与变化都依赖于天地之气相交,阴阳相合而成....

他们的合作关系融洽，接着又一起为电视剧写剧本。Their partnership gelled and scriptwriting for television followed.许多人觉得他给好莱坞写剧本是滥用自己的才华。Many felt he was prostituting his talents by writing Hollywood scripts.这是写剧本的好题材.This is good material for a...

He belaboured the donkey mercilessly.他恶狠狠地猛抽那头驴.They belaboured us with insults.他们对我们肆加凌辱....

In English grammar, the gerund has exactly the same form as the present participle.英语语法中, 动名词具有与现在分词完全一样的形式.Gerund is used partly as a noun, partly as a verb.动名词部分当作名词, 部分当作动词.The word " worth " can be construed with a g...

They have enviable reputations as athletes.作为运动员，他们的声望令人羡慕。Schools with better reputations will be flooded with applications while poorer schools will be left high and dry.较有名气的学校将会收到如潮水涌至般的申请，而差一些的学校则会陷入招生困境。Personal re...

Are no probabilities to be accepted merely because they are not certainties?难道仅仅由于事情不具备必然性,我们就不承认它们也有或然性?The certainties proclaimed by Newton mechanics are illusory.由牛顿力学所表明的确定性是一种错误.But DNA experts still deal in probabi...

Having already been through a few shellings, they were much braver now.他们有了几次的经验,胆子也大多了.They'd get drunk and braver two nights a week, Fridays and Saturdays.他们每周的周五和周六回去喝酒并小放肆一下.Don't reveal that you are faster...

The program saved $11 million in 1988 by substituting generics for brand-name drugs.该计划用非专利药取代品牌药，在1988年节省了1,100万美元。Payers are being more pushy about getting patients to take generics.药物费用的支付者更倾向于让病人使用非专利药.This essay int...

He frequently absents himself from home.他经常离家外出.He often absents himself from the meetings.他经常缺席那些会议.If the team absents for 3 times continuously, that team will be disqualified.如连续三次缺席会议之球队, 将会即时被赛会取消会席....

The tug eased into the narrow docking space.拖船小心地驶入狭窄的码头停泊处.To start with, the pressure on her was very heavy, but it's eased off a bit now...一开始，她的压力很大，但现在已经好些了。The market eased again on Thursday, with medium and b...

They heeled the sloop well over,skimming it along to windward.他们使单桅小船倾斜适当,让它顶着风向前滑去。They heeled the sloop well over, skimming her along to windward.他们使单桅小船倾斜适当, 使它顶着风向前滑去.They heeled the sloop well over, skimming it alon...

The causation, or dependent origination, conveys the dynamic aspect of process phenomena.[因缘法(或缘起法), 表达变化过程现象的动态面.First, this article analyzes the origination and definition of impawning supervision business.本文从物流企业的角度分析...