politeness礼貌；rules规矩；
rulesn.规则；规章；条例；建议；应做之事；习惯
We must be consistent in applying the rules.
我们在实施这些规则时必须保持一致。
There are always a lot of exceptions to grammar rules.
语法规则总是有很多例外。
He is the pink of politeness.
他是礼貌待人的典范。
水利万物而不争,
而万物莫能与之争。
