explain是动词，explanation是名词，例句如下:you can explain why you are late.你可以解释你为什么迟到。
you can give your explanation about your being late.你可以给出你迟到的解释。
you can explain the meaning of the word.你可以解释这个单词。
水利万物而不争,
而万物莫能与之争。
