have a poor appetite

例句：

1. 1.She had a poor appetite and couldn't eat much.
   她食欲不好，吃不了多少。
2. 2. He was very hungry and had a poor appetite.
   他非常饿，食欲不好。
3. 3.The poor man had a poor appetite for food.
   那个穷人对食物的食欲很差。