1ADJ-GRADED [usually ADJ n]微不足道的;不重要的 You can use petty to describe things such as problems, rules, or arguments which you think are unimportant or relate to unimportant things. 微不足道的;不重要的 [disapproval]
He was miserable all the time and rows would start over petty things.
他总是愁眉苦脸的,常因小事发怒。
...endless rules and petty regulations.
没完没了的规则和繁复琐碎的规定
The meeting degenerated into petty squabbling.
会议变成了无聊的扯皮。
2ADJ-GRADED [usually verb-link ADJ]小题大做的;过于关注琐事的 If you describe someone's behaviour as petty, you mean that they care too much about small, unimportant things and perhaps that they are unnecessarily unkind. 小题大做的;过于关注琐事的 [disapproval]