目的：分析手背静脉输液常规方式与改进方式的应用效果。

Objecti:Analyze the applied effect of conventional method and improved method of opisthenar intravenous infusion.

他们用手背擦额头，好像很热。

They wipe their brow with the back of their hands as if they're hot.

你可以看到手背上的静脉。

You can see the vein on the back of your hand.

她的手背上可以看到明显的静脉。

You can see the prominent vein on the back of her hand.

当你走到一扇紧闭的门前时，用手背检查一下。

When you come to a closed door, check it with the back of your hand.

左手手背放在右手掌中。

Rest the back of your left hand in the palm of your right hand.

把手掌晒得和手背一样黑。

Suntan your palm as dark as the back of your hand.

用皮革似的手背擦擦嘴唇。

He wiped his lips with the back of a leathery hand.

双手背可轻轻地在身旁放松.

Your arms can rest limply at your side.

双手背可轻轻地在身旁放松。

Your arms can rest limply at your side. ;