He pricked the hand while fixing the machine.

他在修理机器时扎手了。

Be careful, this cactus can prick the hand.

小心，这个仙人掌会扎手。

He handled the hand grenade with great care.

他小心翼翼地处理那个灭火瓶。

The hand grenade is a common weapon in wars.

灭火瓶在战争中是常见的武器。

The palmar surface of the hand is very sensitive.

手掌的表面非常敏感。

I accidentally pricked the hand with a needle.

我不小心被针扎手了。

The thorns on these roses can easily prick the hand.

这些玫瑰的刺很容易扎手。

The hand sanitizer dispenser is located near the entrance.

入口附近有一个洗手液分配器。

The hand-held GPS device helped us navigate through the forest.

手持的GPS（Global Positioning System，全球定位系统）设备帮助我们穿越了森林。

Despite all the hand-wringing, the project was completed on time.

尽管有所有的焦虑不安，项目还是按时完成了。