他给她发出一份电报,说他立即返回昆斯敦.He sent her off a telegram announcing his immediate return to Queenstown.他在昆斯敦呆了很久.He remained long in Queenstown.他在昆斯敦修完了一门大学课程.He passed through a university course in Queenstown....
The optimal systems differ according to the criterion chosen.按照所用准则之不同,最佳化系统便不同.The optimal conditions for the anaerobic digestion are the following.厌气消化的最佳条件如下.It is designed only to maintain minimum standards, not to a...