feed 的ee发音/i:/音，发音一样的单词有:
see， flee， free， bee， beef ，deed， feet， jeep， keep， meet，...它们都含有/i:/音。
You need to see to it that every cat has water to drink.
你要确保每只猫都有水喝。
Every time the prisoners tried to flee from prison, they were caught back.
每次犯人们尝试逃出监狱，就会被抓回来。
Your level of production can not meet our needs.
你们的生产水平还不能满足我们的需求。
