首先，将手臂伸直，使你的整个身体悬挂在一个休息位上以便体会踩点的方式。
Silent Feet Frontstep Method: First, straighten your arms, hanging in a rest position on your skeleton to survey your foothold options.
缓慢地将腿部拉直，并使腿部保持伸直状态，同时将大腿向头部方向牵引。
Gently straighten the leg and, keeping it straight, draw it in towards your head.
如果它向你扑来，尽量使自己看起来尽可能的强大：挺胸，举手，伸直两腿。
If it does charge at you, try to make yourself look as large as possible: Stick out your chest, raise your arms, and spread your legs.
股四头肌伸展直腿，使膝盖保持在伸直状态。
肱三头肌使手肘伸展，伸直手臂。
股四头肌使大腿肌肉向下缩短，膝盖伸直。
The quadriceps muscles down the front of the thighs shorten to straighten the knees.
肱三头肌使手肘伸直。
股四头肌和大腿前侧使膝盖伸直。
The quadriceps along the front of the thigh straightens the knee.
股四头肌使后腿膝盖伸直。
尽量使两膝靠近床面，结束动作后，伸直两腿，抖动放松。
Tips: try to make two genu near the surface of bed, over the two legs, shaking unbend of relaxation.
大腿前侧的股四头肌使膝关节伸直。
The quadriceps at the front of the thigh straightens the knee.
股直肌（穿过骨盆连结到大腿前侧的一块肌肉）与另外两块肌肉共同作用使腿伸直。
One of the muscles that crosses the hip and runs down the front of the thigh- the rectus femoris- work in concert with the other two muscles to stabilize the leg.
幽灵步之正脚步法：首先，将手臂伸直，使你的整个身体悬挂在一个休息位上以便体会踩点的方式。
Silent Feet Frontstep Method: First, straighten your arms, hanging in a rest position on your skeleton to survey your foothold options.
调整你的姿势直到感到平衡、舒服然后抬起你的双臂并用手指指向天花板。尽可能地使你的手臂保持伸直状态。
Adjust yourself until you feel balanced and comfortable, and then raise both arms with your fingers pointed toward the ceiling. Keep your arms as straight as possible.
按钮使你的座位伸直。
每个关节有两条肌腱，一条可以使之弯曲，一条再使之伸直。
There are two tendons of each joint, one to bend it, and one to straighten it again.
老年人在上坡时倾向以弯曲髋关节，多用髋伸直肌群的策略使重心向前，身体推进。
The elderly are tend to flex hip joint more and use hip extensor muscle to propel the body forward.
伸肌收缩则使关节伸直。
股四头肌处于大腿前侧，有力收缩使膝盖伸直。
The quadriceps muscles along the front of the thigh firmly contract to straighten the knees.
昨天上课之前的热身运动使我今天的腿都不能伸直。
Yesterday, as a warm-up exercise before class so I can stretch out the legs.
关节炎一般只感染一个关节，使腿不能伸直。
Arthritis, generally speaking, affects only one joint, and then legs can not be straightened.
然后身体稍稍向右，使左腿在身体后侧伸直。
Then shift slightly to the right and swing your left leg straight back behind the torso.
评估伸直时使病人充分积极伸直膝关节。
Extension was assessed by having the patient fully actively extend their knee.
从肱骨到尺骨的三头肌是要使前臂从肘关节处伸直，屈肌则是使手肘弯曲。
The triceps muscle straightens the forearm at the elbow joint; the brachialis and biceps muscles bend it.
从肱骨到尺骨的三头肌是要使前臂从肘关节处伸直，屈肌则是使手肘弯曲。
The triceps muscle straightens the forearm at the elbow joint; the brachialis and biceps muscles bend it.
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