Its metallation and addition to cyclopentanone proceeded well to 40.其金属取代物能和环戊酮顺利地反应得到40.Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.以单质碘为催化剂合成了环戊酮乙二缩酮.Methyl dihydrojasmonate was synthesized fro...
Will this be enough to persuade Congress to cough up?这能说服国会掏钱吗？I'll have to cough up $10,000 a year for tuition.我每年将不得不付1万美元的学费。Try gargling with salt water as soon as a cough begins.一开始咳嗽就马上试着用盐水漱口。...
She restrained herself with difficulty from showing a quaver in her voice.她努力克制住自己,不让自己的声音发抖."That's true," chipped in Quaver.“此话不假，”奎弗插嘴道。There was a quaver in Beryl's voice.贝丽尔的声音有一丝颤抖.'That's true,...
The surly insolence of the waiters drove him into a rage,and he flung his serviette to the floor and stalked out of the restaurant.侍者们粗暴无礼的行为使得他怒不可遏,他将餐巾扔到地上,愤然走出餐厅。That old man is rather surly.这老头儿脾气倔.a surly mood坏脾气a s...
A style consultant will demonstrate how to dress to impress.时尚顾问将示范如何穿着以给人留下深刻印象。The boys were vying with each other to impress her.小伙子们争着给她留下好印象.Time has left its impress upon him.岁月在他身上留下了印记....
向导程序和模板可以帮助你创建手册、日历和网页。Wizards and templates can help you create brochures, calendars, and Web pages.对更愿猎奇探险的旅游者，有本地向导带领进山游览。For the more adventurous tourists, there are trips into the mountains with a local guide.经过训练的狗...