四叶草的英文怎么写

例句：

Bees were buzzing in the clover.

蜜蜂在三叶草丛中嗡嗡作响。

Herds are fattening on the early clover.

家畜吃早春的苜蓿而上膘。

Herds are fattening on the clover of early spring.

牧群吃早春的苜蓿而长膘。