这些课不是硬性规定要听的。Attendance at these lectures is not compulsory.参加晚祷并非硬性规定.Attendance at evening prayers is not compulsory.高水材料是一种新型水硬性无机胶凝材料,水灰比高达3.0.The material with high water is a new water - hardening inorganic gelling...
You can pay to be upgraded to a business class seat.你可以付费升级到商务舱。She slipped into the driving seat and closed the door.她溜进了驾驶座，关上了门。He rose from his seat and made for the door.他从椅子上起身向门口走去。...
在纽伯里举行的伯克郡障碍赛中“水玉精灵”把骑师掀了下来。Crystal Spirit unseated his rider in the Berkshire Hurdle at Newbury.他送给我们一对玉狮子.He presented us with a couple of jade lions.深望玉成此事.It is earnestly hoped that you will accomplish the matter....