Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studied.环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂, 研究了影响反应的各个因素....
别想把你脸上那几根毛说成是胡子来美化它!Don't try to dignify those few hairs on your face by calling them a beard!它们吃了含有乳汁的酥油草,膘肥体壮,毛色格外发亮,好象每一根毛尖都冒着油星.They are chewing the juicy grass which makes their fur sleek.在接触点上,根毛细胞壁内凹.The root...
电视转播的音乐会与现场音乐会不可同日而语。Live concerts are never quite the same on the small screen.1965年他使用了那个词，创造了电视转播的历史。He made televisual history when he used that word in 1965.他在看电视转播的网球赛。He was watching a game of tennis on a televisi...
The announcer gave out that the 3:30 train to Manchester would start from Platform 4.播音员通知:三点三十分开往曼彻斯特的火车将从4号站台发车。Manchester United were by now oozing with confidence.曼彻斯特联队现在充满信心。She graduated in English and Drama from ...