musculus biceps brachii 基本英英近义反义例句 肱二头肌 Noun: a muscle that flexes and supinates the forearm近义词biceps brachii肱二头肌 The bodybuilders contracted their biceps in unison.健美运动员们一起收缩肱二头肌。 He gave his biceps a flex to impress the ladies.他收缩他的肱二头肌以吸引那些女士们的目光。