live on

柯林斯词典

1. PHRASAL VERB If you live on or live off a particular amount of money, you have that amount of money to buy things. 靠 (某数额的钱) 过活
...people trying to live on $100 a week. …设法靠每周$100过日子的人们。
2. PHRASAL VERB If you live on or live off a particular source of income, that is where you get the money that you need. 以…为收入来源
The proportion of Americans living on welfare rose. 靠福利生活的美国人的比例上升了。
3. PHRASAL VERB If an animal lives on or lives off a particular food, this is the kind of food that it eats. 以…为主食
The fish live on the plankton. 这种鱼以浮游生物为主食。