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...
Drummond was working on a book in collaboration with Zodiac Mindwarp.德拉蒙德正与“黄道神游”（本名马克·曼宁）合作撰写一本书。We studied that book in matric.我们毕业那年学了那本书。She took someone else's book in mistake for her own.她把别人的书错当成自己的书拿走了....
作为食品配给制的一种遗留影响，他们总把黄油和人造黄油混在一起吃。As a hangover from rationing, they mixed butter and margarine.昨天我取回了遗留在火车上的包.Yesterday I retrieved the bag I left in the train.从满洲时代遗留下来的一些年老的高级军官给撤换了.Some aging higher officers inherited ...