1. She has a frivolous nature and won''t take anything seriously.
    她生性轻浮，什么事情都不肯认真对待。

2. frivolous

2. He made some frivolous remarks.
    他说了些轻佻话。

3. It was frivolous of him to make such an accusation.
    他提出这样的指控真无聊。

4. He spent a lot of his money on frivolous things.
    他在一些无聊的事上花了好多钱。

1. 轻佻的, 琐碎的, 妄动的：susceptometer 磁化率计 | frivolous 轻佻的, 琐碎的, 妄动的 | brake connection pin 制动拉杆销

2. frivolous

2. 无关紧要的：tactile触觉的 | frivolous 无关紧要的 | reprieve 暂缓

3. 轻佻的：frivolity 轻薄 | frivolous 轻佻的 | frivolously 轻浮地

1. 轻浮的;轻佻的;草率的
    If you describe someone as frivolous, you mean they behave in a silly or light-hearted way, rather than being serious and sensible.

frivolous

    e.g. I just decided I was a bit too frivolous to be a doctor...
           我刚刚决定说自己有点过于轻率，不适合做医生。
    e.g. Isabelle was a frivolous little fool, vain and flighty.
           伊莎贝尔是一个轻佻的小傻瓜，自负而又反复无常。

2. 无聊的;无用的;浪费的
    If you describe an activity as frivolous, you disapprove of it because it is not useful and wastes time or money.

    e.g. The group says it wants politicians to stop wasting public money on what it believes are frivolous projects.
           这个团体表示希望从政者不要再把公帑浪费在一些它认为无关痛痒的项目上。

1. not serious in content or attitude or behavior

    e.g. a frivolous novel
           a frivolous remark
           a frivolous young woman