If the old dog barks, he gives counsel.如果老狗叫，他是给忠告。Then he sits and barks until someone lets him out.然后它坐着吠叫,直到有人把它放出去为止.A dog that barks constantly can be a source of annoyance to the neighbours.吠个不停的狗会惹邻居烦恼。The dog bar...
Their commitment was only to maintain the extent of forests, not their biodiversity.他们仅承诺维持现有森林面积，并不保证林区生物的多样性。Great progress has been made in protection of biodiversity.生物多样性保护取得重大进展.Aves diversity is one of the most im...