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1·The quadriceps straightens the knee.

股四头肌帮助伸直膝盖。

2·The quadriceps straightens the back knee.

股四头肌使后腿膝盖伸直。

3·This exercise helps you to maintain quadriceps strength.

这练习帮助你保持四头肌力量。

4·The quadriceps muscle brings your knee into full extension.

四头肌肌肉让你的膝进入完全的延长。

5·The quadriceps of the extended leg holds the knee straight.

股四头肌伸展直腿，使膝盖保持在伸直状态。

6·The quadriceps at the front of the thigh straightens the knee.

大腿前侧的股四头肌使膝关节伸直。

7·The quadriceps along the front of the thigh straightens the knee.

股四头肌和大腿前侧使膝盖伸直。

8·If your stance is too wide, you can't engage your quadriceps muscles well.

如果你站立的姿势太宽，就不能很好地加强股四头肌的肌肉。

9·The quadriceps muscles down the front of the thighs shorten to straighten the knees.

股四头肌使大腿肌肉向下缩短，膝盖伸直。

10·It is a very good exercise machine for keeping your quadriceps strong after surgery.

它是一部在术后保持股四头肌强壮的非常好的练习机器。

四头肌

1·Engage your quadriceps (front muscle on thigh) and extend your torso until you can melt over your legs.

使用你的四头肌(前面的大腿肌肉)并延长你的躯干直到你能够将你的腿弄软。

2·This exercise helps you to maintain quadriceps strength.

这练习帮助你保持四头肌力量。

3·The research focused on eccentric exercise, which creates a motion similar to the way in which quadriceps in human thighs are exercised during a downhill run.

该研究主要关注离心运动，该运动在下山的过程中人类的大腿股四头肌所经历的锻炼相似。

4·Quadriceps flexibility is crucial for the drop-knee move so frequently required on difficult overhanging routes.

四头肌的柔软对在悬岩要常做膝盖向下的动作很重要。

5·Knee injury scale and strength of quadriceps femoris were used to evaluate the effects.

用治疗前后膝关节损伤评分和股四头肌肌力情况进行评定。

(1)quadriceps femoris股四头肌