甲烷和丙烷是烷烃。Methane and propane are alkanes.丙烷气钢瓶a propane gas cylinder亚胺基杂环丙烷季铵盐的阳离子,一定是按协同反应的方式开环的.The aziridinium ions must all be opened by a concerted process....
The teacher training college put up a plaque to the college's founder.那所教师培训学院为该学院的创立者立了一块纪念牌匾。When not removed, plaque causes tooth decay and gum disease.牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。Deposits of plaque build up between the...
I learnt to jive there when they got the jukebox.他们安了自动点唱机后，我在那儿学会了跳摇摆舞。The waiters mime to records playing on the jukebox.侍者们配合自动唱机里播放的唱片对口型假唱。My favorite song is on the jukebox.自动点唱机在放我最喜欢的歌。...
莫比无疑具有很好的乐感。Moby certainly has a fine ear for a tune.在同莫比?狄克最后的较量中,唯一的幸存者是伊希梅尔.Ishmael is the only survivor of the final confrontation with Moby Dick.帕斯卡小姐不在说话了,又拿起了她的莫比酒杯.Miss Pascal stopped talking and picked up her ma...