harbinger of spring

1·The robin is a harbinger of spring.

知更鸟是春天的报信者。

2·The cuckoo is a harbinger of spring.

布谷鸟预告春天的来临。

3·The robin is a harbinger of spring .

知更鸟是春天的报信者。

4·The cuckoo is the harbinger of spring.

布谷鸟的歌声预示春天的到来。