行业、科学家和政策制定者之间的合作是解决海洋保护挑战的关键。
It is now clear that the hybrids form seeds which have the one or the other of the two differentiating characters.
你知道,在中世纪的英国,但你遇见一个非常穷苦的人,你会认为他“不走运”,直接地说,那些不被幸运之神眷顾的人。
The process of grouping, of organization, is not arbitrary but follows definite laws.