n.布谷鳥；杜鵑
A cuckoo began calling from a hawthorn tree. 一只布谷鳥開始在一株山楂樹里咕咕地呼叫。
The cuckoo lays its eggs in other birds' nests. 杜鵑在別的鳥巢中產(chǎn)卵。
The cuckoo is a herald of spring. 杜鵑是春天的先驅(qū)。
