peck at

1. 啄

Some birds were pecking at the corn.

有几只鸟在啄食谷物。

2. 少量地吃

The child is only pecking at his food.

这孩子只吃一点点东西。

3. 找……麻烦

Why are you always pecking at me?

你为什么总是找我麻烦?