到国外工作存在许多陷阱。The pitfalls of working abroad are numerous.他含糊其词地说了到国外工作的事.He had talked vaguely of going to work abroad.我上次信中谈到的那位老师到国外去了.The teacher referred to in my last letter has gone abroad....
介绍了鉴别氯代乙酸的反应原理和操作方法.Reaction principles of chloroacetic acid detection and its operation Methods: Were introduced.表明利用生物技术控制氯代有机物污染的应用前景是光明的.Controlling of chloroorganics pollution by using biological technology has a br...