shoulder; upper arm

shoulder bag

shoulder

arm

to strip to the waist; to be bare to the waist

bare to the waist

to bare one's chest; bare-chested

to push up one's sleeves

elbow

see 胳膊肘[ge1 bo5 zhou3]

lit. to go into battle bare-breasted (idiom); fig. to go all out; to come out in the open

see 胳膊肘朝外拐[ge1 bo5 zhou3 chao2 wai4 guai3]

lit. the elbow turns outward (idiom); fig. to side with outsiders rather than one's own people

(idiom) the weak cannot overcome the strong