The blood supply to the skin is reduced when muscles stiffen.
肌肉发僵时，皮肤的供血量就会减少。
These clothes restrict your freedom of movement and stiffen up the whole body.
这些衣服使你的手脚难于自由活动，使整个身体也僵硬起来。
At the same time their tissues stiffen.
在此同时他们组织变硬。
To cause to stand erect like bristles; stiffen.
使…僵硬使…象刚毛一样直立；
We must stiffen them all up and allow no weakness.
我们一定要使他们都坚强起来，不允许有丝毫软弱。
The promise of a reward might stiffen their resolve.
答应给他们奖励可以坚定他们的决心。
Straighten up little soldier. Stiffen up that upper lip.
挺直腰杆，咬紧牙关，做个象样的小兵。
The boy was seen to stiffen and then to fall from the tree.
人们看到男孩蹬了一下腿，然后从树上掉了下来。
The boy was seen to stiffen and then to fall from the tree.
人们看到男孩蹬了一下腿，然后从树上掉了下来。
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