指关节

He cracked the joints of his fingers.

他把手指节弄得劈啪作响。

Our fingers bend at the knuckle.

我们手指在指节处弯曲。

His arm looks like a broken compass;it's not an arm any more, but a knucklebone with a shank attached.

他胳膊活像损指南针，早已不再是条胳膊，却成加上条胫骨指节。

The most common type of joint in the human body is the diarthrodial joint -- knuckles and shoulders are examples -- in which two bones come together in a capsule.

人体中最常节是运动节，如指节和肩节等，节处个囊状物把两根骨头结合在起。