The girl tapped the door with her knuckles.

女孩用指关节轻轻。

Harry kneaded his forehead with his knuckles.

利用指关节揉了揉伤疤。

It disappeared up to the second knuckle.

第二指关节都陷进去了。

Some people will crack their knuckles.

有些人会掰指关节。

My thumb has one knuckle, notice the K is silent, but my other fingers have two knuckles, knuckles.

我的拇指有一个指关节，注意 K 是不发音的，但是我的其他手指有两个指关节，指关节。

Crabbe stopped laughing and started rubbing his knuckles in a menacing way.

克布不笑了，开始恶狠狠地揉着他那板栗似的指关节。

Each of my fingers has a knuckle.

我的每个手指都有一个指关节。

He knuckled the tears furiously from his eyes.

他气愤地用指关节擦去眼中的泪水。

Harry and Ron sat down again, Ron massaging his knuckles.

利和罗恩又坐了下来，罗恩抚摩着手指关节。

We all looked—the knuckle was black and blue.

我们大家都瞧了——指关节有点青紫。

You might tap your foot, crack your knuckles, or bite your lip.

你可能会点脚、掰动指关节或咬嘴唇。

My fingers get cold, but my knuckles get hot.

我的手指怕冷，但我的指关节怕热。

Yeah, this bump on your knuckle is nothing.

是的，你指关节上的这个肿块没什么。

Ennui stood up from the couch. She cracked her knuckles.

丧丧从沙发上站起来，掰了掰指关节。

See how they tap them with their knuckles to make sure it's not bad?

他们用指关节轻每个胡桃确定是好或坏。

Like Joey's constant knuckle-cracking isn't annoying?

像Joey经常扳指关节就不惹人厌吗？

Really hairy-knuckled types, y'know, raced through there.

真的是那种连指关节上都长毛的家伙，争先恐后。

Because your knuckles are like this.

因为你的指关节是这样的。

But I saw his knuckles tighten convulsively on the wheel.

但我看见他抓着方向盘的指关节痉挛着绷紧了。

It's meant to harden your knuckles so you don't break them if you get into a fight.

可以强健指关节打架的时候就不会弄断它们。