pack up是什么意思？

He'd left me to pack up the mail and post it off.他让我整理并投递邮件。Let's pack up and get ready to start at once.让我们收拾好行李,准备马上出发.It's time to pack up.到收工的时候了....

pack up的音标：pack up的英式发音音标为：[pæk ʌp]pack up的美式发音音标为：[pæk ʌp]...

complex的音标：complex的英式发音音标为：['kɒmpleks]complex的美式发音音标为：[kəm'pleks]...

“梳”的拼音为：shū...

cyclopentamine的音标：cyclopentamine的英式发音音标为：[saɪkləʊpen'tæmaɪn]cyclopentamine的美式发音音标为：[saɪkloʊpen'tæmaɪn]...

yo-yo的复数形式为：yo-yos...

跨过波托马克河就是五角大楼 —— 一座奇特而又低矮的五边形建筑.Across the Potomac River is the Pentagon, a strange, low, five - sides building.历史记载认为,正五边形具有神秘的力量.The regular pentagon has been credited with magical powers throughout recorded history.是的...

“伤寒”的拼音为：shāng hán...

require的现在进行时为：requiring...

Dishonest importers would be able to pocket the VAT collected from customers.不诚实的进口商将会能够把从顾客那里收取的增值税据为己有。You have been dishonest with me.你对我不诚实。Beware of dishonest traders in the tourist areas.在旅游区一定要谨防奸商。...

本文列举了一些含卤族元素的氧化剂对不同种类醇的选择性氧化实例.This article enumerate some Halogen - based oxidants and their some important applying examples.我们认为这是卤族离子与芳羧酸吸附竞争,使芳羧酸分子从银胶表面脱附所导致的.The influence of halogen ions on SERS of aromatic acids ...

Grain intercrop area amounts to many mus 200.粮间作面积达200多万亩.Intercrop Association of several crops on the same field at the same time.作物:同时在同一地块上种植的多种作物的集合.Authors of the paper consider it feasible to intercrop maize and a...

二氟化的...

vt.使恶化vi.恶化，变坏...

Keats’ reputation as a great poet rests largely upon the odes and the later sonnets.作为一个伟大的诗人,济慈的声誉大部分建立在他写的长诗和后期的十四行诗上。He referred to the manuscript circulation of the sonnets.他谈到了十四行诗手稿的流行情况.He rhymed out sonnets in he...

They were both well schooled in the ways of the Army.他们俩都受过良好的陆军训练。He is schooled to spot trouble.他受过训练，能够迅速发现问题。She bought him as a £1,000 colt of six months and schooled him.在它还是6个月的小马驹时，她用1,000英镑将它买下，并训练它。...

FDA批准 美法仑 ( 左旋苯丙氨酸氮芥 ) 上市.Melphalan ( L - PAM ) is approved by FDA for marketing.在合成工作中发现:在NAE18与氮芥芳基磷酰氯的反应过程中, 4- 二甲氨基吡啶 ( DMAP ) 起着关键性的催化作用.In the reaction of NAE 18 with nitrogen mustard aryl phosphorochloridate, 4 - ...