... most meaningful is donation, during which time everyone present, teachers or students, is expected to donate one or more books to the library. 老师,这里的which是定语修饰time吗?看不懂这个which的作用和句子的所在句子的意思。
...发紧迫。原文:Two things make the problem more pressing now.我的:There are now two things that make the problem more pressing.用there be句式是否更好?翻译时there be句式什么情况...