为什么“鸟会飞”译作birds fly,而不是the bird can fly?

为什么“鸟会飞”译作birds fly,而不是the bird can fly? In winter ,some birds fly to the south 为什么要用fly啊. Can birds fly?----- Yes,() can I like to watch the birds fly in the sky.为什么用fiy 而不用fiying? I like to watch the birds fly in the sky为什么用fiy 而不用fiying? The birds can't fly without w_____这里使用wings 还是wing 为什么急! All birds have wings,but not all birds can fly the birds fly (higher) than the bees . Birds fly in the sky的意思 脑筋急转弯 Why do birds fly south? Why do birds fly south for winter Birds can't fly without w____. We are birds.we can fly( ). not all birds can fly翻译 Not all birds have to fly f___away. Sometime over the Rainbow,blue birds fly birds fly over the rainbow是什么意思birds fly over the rainbow why can't I... Birds fly是主谓结构.那 Birds can fly 是什么结构?