在家里可以用哑铃进行二头肌弯曲、肩上推和三头肌伸展等练习。
Bicep curls, shoulder presses and tricep extensions are some of the exercises you can do at home using dumbbells.
大脑是肌肉组织，假如没有至少每周最少三次的二头肌弯曲锻炼，我们就会失去我们的讨人喜欢的外表。
The brain is a muscle and without those bicep curls at least three times a week we will lose our flattering figures.
大臂上的二头肌使手肘弯曲，拉向躯干的方向，辅助伸展动作。
The biceps of the both upper arms bend the elbows, drawing the torso into the stretch.
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