man's activity造句

例句与造句

1. wastes resulting from man's activities have been traditionally discharged into the ocean .
   人类活动时所产生的废物传统上都是排入海洋。
2. the study of "heavenly bodies" was only a very small part of man's activities in those distant days .
   远古时代人类对于“天体”的研究还只是其活动的一个很小部分。
3. It's difficult to find man's activity in a sentence. 用man's activity造句挺难的