英汉词典

1. 存在;实际上有
    If something exists, it is present in the world as a real thing.

    e.g. He thought that if he couldn't see something, it didn't exist...
           他认为自己看不见的东西就不存在。
    e.g. Research opportunities exist in a wide range of pure and applied areas of entomology...
           纯理论昆虫学和应用昆虫学的众多领域都存在着研究机会。

2. （尤指在逆境中）生存，生活
    To exist means to live, especially under difficult conditions or with very little food or money.

    e.g. I exist from one visit to the next...
           我的生活就是一个接一个的访问。
    e.g. I was barely existing.
           我勉强维持生计。