feed at the public trough

例句：

1. 1. Thebaby needs to be fed every three hours.
   婴儿需要每三小时喂一次。
2. 2. Thefarmer feeds his livestock with grainand hay.
   农民用谷物和干草喂养他的牲畜。
3. 3. The old man wasfed by the kindness of strangers.
   老人得到了陌生人的善良照顾。