冬去春来。

Winter went and spring came.

The birds in pairs in the tree.

树上的鸟儿成双对。

Birds make their nests in spring.

鸟儿在春天筑巢。

The song of birds heralds in spring.

鸟儿的歌唱预告春天的来临。

Birds mate in the spring.

鸟在春天交配。

Birds pair and build nests in spring.

鸟在春天交配筑窠。

Vast multitudes of birds visit this lake in spring.

春天有大批的鸟飞临此湖。

I decided to keep the bird until spring.

我决定将这只鸟喂养到来年春天。