erectormuscle

例句：

1. 1. The doctor advised him to exercise regularly to maintain his erector muscle strength.
   医生建议他定期锻炼以保持他的拉紧器肌肉力量。
2. 2.During the intense workout session, the athlete's skeletal muscles were strained and tensed.
   在激烈的训练期间，运动员的骨骼肌肉被拉紧并紧张。
3. 3. The scientist discovered that regular stretching exercises can help improve the flexibility of the erector muscle.
   科学家发现，定期伸展运动可以帮助提高拉紧器肌肉的灵活性。