bicep

The bodybuilders contracted their biceps in unison.

健美运动员们一起收缩肱二。

The article explains the morphology factor of chinning in combined grip. It points out that chinning movement can well-developed muscles such as pectoralis major, latissimus dorsi and biceps brachii.

章阐述了正握引体向上比反握引体向上难的因素,明确了引体向上动作,主要用来展胸大、背阔和肱二的,这些肉的肉块。