笨的,愚蠢的

Don't ask that bird brain; he knows nothing. 別問那傻瓜，他什么也不懂。

The penguin is a flightless bird. 企鵝是一種不會(huì)飛的鳥。

The bird sang high and clearly in the tree. 鳥兒在樹上清脆地高歌。

The bird flapped its wings and flew away. 那鳥振翅飛去。

The bird is building a nest of straw and twigs. 這只鳥在用稻草和小樹枝筑巢。