她弯下腰，把鞋里的一粒石子抖出来。

She bent down to shake a pebble out of her shoe.

《牛津词典》

他清除了鞋中的一粒石子。

He removed a stone from his shoe.

《柯林斯英汉双解大词典》

我坐下来，穿好针，剪下了一粒旧钮扣。

I sit down, thread a needle, snip off an old button.

《柯林斯英汉双解大词典》

If you take one of those individual grains of sodium chloride, look at it carefully, you will see the edges look like this.

如果你拿起,氯化钠晶体的一粒，仔细观察，你可以看到这样的棱角。

麻省理工公开课 - 固态化学导论课程节选

I was bobbing my head, so maybe I better bob my head again and sure enough another piece of corn comes.

我一直在摇头晃脑,那我最好继续摇头晃脑,这样的话我就能再得到一粒谷粒

耶鲁公开课 - 金融市场课程节选

Now, they're offered--You take the red one away and now they're offered a choice between the two remaining ones.

现在把红色那粒拿走,在剩下的两粒中选一粒。

耶鲁公开课 - 心理学导论课程节选