frivolous
英 [ˈfrɪvələs]
[ADJ]
1. 轻率的
If you describe someone as frivolous, you mean they behave in a silly or light-hearted way, rather than being serious and sensible.
双语例句
例：I just decided I was a bit too frivolous to be a doctor.
我只是认定自己有点儿太轻率，不适合当医生。
2. 无用的
If you describe an activity as frivolous, you disapprove of it because it is not useful and wastes time or money.
双语例句
例：The group says it wants politicians to stop wasting public money on what it believes are frivolous projects.
该团体表示他们希望政客们停止在该团体认为无用的项目上浪费公款。
ADJ. 形容词
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