wear thin

wear thin

变薄, 磨薄, 放弃, 变得无趣味

例句与用法：

The teacher's patience began to wear thin when he saw that no one knew the lesson.

老师发觉大家对功课一无所知，就渐渐不耐烦起来。

As a result, nacre thickness is sometimes just a cosmetic layer that can wear thin over time.

所以真珠质的厚度就像脸上化妆品，不久就会磨薄了。

The joke began to wear thin when you heard it too many times.

这个笑话因为听得遍数太多不那么吸引人了。