quadr-,四，-cep,头，词源同captain,cap.引申词义四头肌。

1. They point out , however, that strengthening the quadriceps could prevent further damage.

不过,他们确知的事是, 加强大腿股四头肌的力量,可减低关节进一步受损的机会.

2. Lunges are also an excellent exercise for maintaining quadriceps and hamstring strength.

弓步也是维持股四头肌和腿筋力量的一种好练习.

3. 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.

4. To strengthen weak knees, the quadriceps group of muscles need to be strengthened.

只有股四头肌被加强的时候虚弱的膝关节才能得到加强.

5. The Biceps muscle of the thigh Bends the leg; the quadriceps straightens it.

两足动物股部的肌肉使腿弯曲, 四头肌则将腿拉直.