单词knuckle-joint
n.: 肘接;叉形接头网络: 铰接;肘接头
叉形接头
肘接
I have learned to open the bottle with one hand and sort of[3] tuck a pill in the knuckle joint.
我已经学会用一只手打开瓶子,藏一片药在膝关节里。