二头肌

The bodybuilders contracted their biceps in unison.

健美运动员们一起收缩二头。

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.

文章阐述了正体上比体上难做的因素,明确了做体上动作,主要用来发展胸大、背阔二头的力,发达这些肉的肉块。