发音：[ˈɡraɪndɪŋ]

作形容词，意为：无休止的;难熬的;刺耳的

例句：

Parts of the machine were grinding together noisily.

翻译为：机器零件摩擦发出刺耳的声音。

这里的grinding作形容词表示刺耳的。

Their grandfather had left his village in order to escape the grinding poverty.

翻译为：为了摆脱贫困的煎熬，他们的祖父离开了村子。

这里的grinding作形容词表示煎熬的。

同义词：sharp , harsh