biceps muscle

例句：

1. 1. The athlete's biceps are visible as he lifts the barbell.
   运动员的二头肌在举重时可见。
2. 2.The biceps play a crucial role in lifting heavy objects.
   二头肌在举起重物中扮演着关键角色。
3. 3.The biceps are often targeted for strength training exercises.
   二头肌经常是力量训练练习的目标部位。