非离子型表面活性剂有聚氧乙烯缩合物糖酯和烷基胺氧化物.Nonionics include polyoxyethylene condensates, sucrose esters and alkyl amine oxides.解决这一问题的一般办法是避免使用烷基卤.The general answer to this problem is to avoid alkyl halides.非离子型表面活性剂有聚氧乙烯缩合物, 糖酯和烷基胺氧化...
I'm Claudia Polley with the news headlines.我是克劳迪娅·波利，下面是新闻提要。Ancient GREece produced many well - known historians such as Herodotus, Thucydides, Xenophon, such as Polley than Oslo.古代希腊产生了许多著名历史学家,如希罗多德 、 修昔底德 、 色诺芬 ...
Stern also studies and observes the behaviour of babies.斯特恩还研究观察婴儿的行为。He observes carefully but says little.他总是仔细观察,很少说话.He observes keenly but says very little.他观察敏锐,却很少发言.Diana, invisible, observes Actaeon in the thick...
He pushed everyone full speed ahead until production hit a bottleneck.他催促所有人拼命干活，直到生产遭遇瓶颈。I pushed the problem aside; at present it was insoluble.我把问题抛在一边，目前它还无法解决。I pushed through the crowds and on to the escalator.我挤出人...