这本书与你手掌的大小差不多。

THE book fits into the palm of your hand.

youdao

我停下来的时候发现手掌的一块皮被蹭掉了。

Skin tore away from the heels of my palms as I slid to a stop.

youdao

他们把大部分的重量放在手掌的后跟部，手掌很粗糙而且很硬。

They put much of their weight on the heels of their palms, which are rough and calloused.

youdao

In fact, certain areas of the skin would be impacted most, most dramatically, the face and the chest, the arms, but more distal point of the arms, like the palms of your hands.

事实上,皮肤某些区域将受到严重伤害,尤其触目惊心的是,在面部,胸部和手臂位置,很多都出现在手臂的末端,比如手掌上

耶鲁公开课 - 生物医学工程探索课程节选

Now Susan Mayne, who is a Professor here in the School of Public Health, has done some very interesting work with an electronic device that can be passed over the palm of your hand and measures pigmentation in the hand as a way to assess vegetable intake in people.

苏珊·梅恩,我们公共卫生学院的教授,做了些值得关注的工作,通过电子设备,扫描你的手掌,测算其上色素沉淀,可以得出人们蔬菜的摄入量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选