常見例句雙語例句Environmental problems, whose nature is the existence of man, have been the common concern for humankind.環(huán)境問題已經(jīng)成為全人類共同關(guān)心和關(guān)注的問題，環(huán)境問題的本質(zhì)是人類本身的生存問題。 返回 common concern of humankind