vanity

他的虚荣心在每个认识他的人看来都很明显。

His ___vanity was apparent to everyone who knew him.

他的虚荣心让他拒绝戴眼镜，尽管他需要它。

His ___vanity prevents him from wearing glasses, even though he needs them.

她的虚荣心要求每一张照片在发布前都必须经过完美修饰。

Her ___vanity demands that every photo be perfectly edited before she posts it.