I exist by what I think and I can't stop myself from thinking.
我靠我之所思生存,因此我不能停止思想。
In the old days his family existed by begging.
在旧社会,他们一家靠乞讨度日。
No one exists in a vacuum.
没有一个人是生活在真空中的。
Salt exists in many things.
许多东西里都有盐分。
Lime exists in many soils.
许多土壤中都含有石灰。
Strange ideas existed in his mind.
他脑子里有一些奇怪的想法。
Crime and poverty still exist in big cities.
犯罪和贫困在大城市里仍然存在。
She existed only on milk.
她只能靠喝牛奶活命。
The horse exists on vegetable food.
马靠植物性食物生活。
They cannot exist on such low wages.
靠这样低的工资他们无法生活。
She exists on very little.
她生活很艰苦。
Some people in some poor countries receive wages that allow them to exist but not to live.
有些贫困国家的人民的收入只能勉强维持生计。