This island is maintained as a sanctuary for endangered species.那个岛继续作为濒危物种的保护区.Pandas are an endangered species.熊猫是濒危物种。The giant panda has become an endangered species.大熊猫已成了一种濒临灭绝的动物....
学位课程不讲授这个课题。The topic is not taught in degree courses.关于这个课题缺乏可靠资料。There was a dearth of reliable information on the subject.我要就我的研究课题同导师见一次面。I have a meeting with my supervisor about my research topic....
It would be fair to say he had one or two unhappy moments out there...可以这么说，他在那里有过一两次不愉快。It is all very well to urge people to give more to charity when they have less, but is it really fair?鼓励那些自身并不富裕的人更多地投身慈善事业固然没错，但这么...