乙酰香豆素...

This paper discussed three methods of producting vinyl etherspreparation from acetylene, dehydrohalogenation and acetals.论述了乙烯基醚类化合物的三种主要制备方法乙炔法 、 脱卤化氢法和缩醛热分解法.Allene is an isomer of methyl acetylene.丙二烯是甲基乙炔的一种异构体.In th...

松果菊属植物，紫锥菊（类似雏菊，据信有助于身体自愈及抗感染）...

Lyginopteridaceae的音标：...

阿西美辛...

He began to tie his shoelaces.他开始系鞋带。I was a soldier down to my shoelaces.我是名不折不扣的军人。a pair of shoelaces一副鞋带He is bending down to tie his shoelaces.他正弯下腰系鞋带。Hurry up. Tie up your shoelaces; we are late.快点, 系上你的鞋带, 我们晚了....

I don't know how I aced in, I was lucky enough.我不知道这好事怎么让我给碰上了, 我够幸运的.He aced every physical fitness test they gave him.他顺利通过了他们对他所作的每项体格检查.For example , I can say I aced my last job interview.再说一遍你刚才说的那句话,好吗?...

The corresponding reaction of acetaldehyde is subject to general base catalysis.乙醛相应的反应服从广义的碱催化.During alcoholic fermentation acetaldehyde acts as a hydrogen acceptor instead of oxygen.在这个过程中乙醛取代了氧作为氢的受体.Alcohol dehydrog...

place的复数形式为：places...

The present invention isp - acetaminophenol anal injection as antipyretic analgesic for children and its preparation process.本发明公开了用于小儿发热、疼痛等疾病用的解热镇痛药――对乙酚氨基酚肛注液及其制备方法....

Boniface的音标：Boniface的英式发音音标为：['bɒnɪfeɪs]Boniface的美式发音音标为：['bɒnəˌfeɪs]...

pharmaceutical的音标：pharmaceutical的英式发音音标为：[ˌfɑ:mə'su:tɪkl]pharmaceutical的美式发音音标为：[ˌfɑrmə'sutɪkl]...

An extraordinary effort , but this is no ordinary cetacean.这项工作异常艰巨, 因为这是一头非同寻常的鲸鱼.The sperm whale is believe to dive deeper than any other cetacean.人们相信,抹香鲸比其他鲸类动物潜得更深.Impossible, cetacean and larynx is very narrow.不可能,...

颐和园...

处于和平状态，处于平静的状态，故去，死去...

surface的音标：surface的英式发音音标为：['sɜ:fɪs]surface的美式发音音标为：['sɜrfɪs]...

This photo focused on vendors outside the Potala Palace in Lhasa , Tibet.这张照片的主题是布达拉宫外的小贩们.What was the course of building the Potala Palace in history?历史上修建布达拉宫的过程是怎样的?What parts does the Potala Palace mainly contain?布达...

Williams faces life in prison if convicted of attempted murder.如被判谋杀未遂，威廉斯将面临终身监禁。The faces of the two conspirators gave the game away.这两个共谋者的表情泄漏了秘密。Their two faces were hardly more than eighteen inches apart.他俩的脸相隔还不到1...

diacetate的音标：diacetate的英式发音音标为：[daɪ'æsɪteɪt]diacetate的美式发音音标为：[daɪ'æsɪteɪt]...

n.风度，恩遇，魅力，优美( grace的名词复数 )，宽限，恩泽，风度...

retrace的第三人称单数（三单）为：retraces...

n.熔炉，火炉，极热的地方，严峻的考验或磨难...

complacent的音标：complacent的英式发音音标为：[kəm'pleɪsnt]complacent的美式发音音标为：[kəm'plesənt]...

He had been devious and two-faced.他从前向来都是阴险狡猾，口是心非。Video clips are a good way of making candidates look two - faced.视频片段能够很好地展现出竞选者们截然不同的两面性.If I were two - faced, would I be wearing this one?如果我真是两面人, 我会用这一张脸见人 吗 ?...

acetocinnamone的音标：acetocinnamone的英式发音音标为：[əstəʊ'sɪnəmən]acetocinnamone的美式发音音标为：[əstoʊ'sɪnəmən]...

Bottles and cans were hurled on the terraces by the mob.暴徒向看台扔瓶子和罐子。The people here grow rice on terraces.此地的人们在梯田里种植水稻.Footballers launched an unprecedented crusade against racism on the terraces.足球运动员们对阶梯看台上的种族歧视发起了一场空...

acetabulum的音标：acetabulum的英式发音音标为：[æsə'tæbjʊləm]acetabulum的美式发音音标为：[ˌæsə'tæbjʊləm]...

n.鬼脸，怪相，痛苦的表情vi.扮怪相，做鬼脸...

necklace的复数形式为：necklaces...

In 1957, the Soviets launched Sputnik 1 into outer space.1957年，苏联人将“斯普特尼克1号”人造卫星送入了外层空间。They have been visited by creatures from outer space.有外星人拜访了他们。radio waves from outer space来自外层空间的无线电波...