;
臂;He barked his knuckles on the doorjamb.
门侧柱上擦破了指关节处的皮。
语](笑话等)近乎猥亵的，近乎下流的，近乎粗鄙的
He barked his knuckles on the doorjamb.
门侧柱上擦破了指关节处的皮。
his knuckles were white as he gripped the steering wheel.
紧握方向盘，握得手指关节发白。
He got a rap over the knuckles for spending too much money on his business lunches.
因为商务午餐上花钱太多，挨了一顿批评。
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.
人体中最常见的关节是运动关节，如指关节和肩关节等，关节处的一个囊状物把两根骨头结合一起。
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