trust是信任的意思，而credibility则是信誉的意思，区别可以从以下例子看出：
Credibility is a good thing that you need to earn for a lifetime, it means what is the level of you can be trusted. 信誉是好东西，一辈子都要挣来的，说明你到什么程度是可以信任的。
水利万物而不争,
而万物莫能与之争。
