be old enough to know better meaning in Chinese

岁数不小应更懂事些了

Have you been drawing on the walls ? i thought you were old enough to know better .
墙上是你画的吧？我还以为你都懂事了呢。
She is old enough to know better than to spend all her money on clothes
她长大了，不会无知到把所有的钱都花在衣服上。
As soon as people are old enough to know better , they don ' t know anything at all
当人们一旦老至应该更加明白事理之时，却是什么都不懂了。
As soon as people are old enough to know better , they do not know anything at all
当人们一旦老至应该更加明白事理之时，却是什么都不懂了。