1.feed on 喂养
Can enlightened man feed on the fruits of enlightened innovation?
已启蒙的人可以以启蒙创新的果实为食吗？
Vampire bats feed on the blood of large birds, cattle, horses and pigs.
吸血蝙蝠以大型鸟类，牛，马以及猪的血液为食。
2.subject to 受制于,易于
Already americans are subject to de-facto capital controls.
如今美国已经受到变相的资本控制。
The advance estimate is subject to two revisions in coming months.
这个预先估计在未来的几个月中需要受到两次修订。
3.come up 发生；上来；提到
A new problem had come up.
发生了一个新的问题。
Two-headed monsters or the ability to breathe underwater rarely come up when I'm sleeping.
双头怪物或者能在水下呼吸之类的，从来就没有在我的梦中发生过。
