1. When those boundaries are crossed, an American's body will visibly stiffen and his manner will become cool and aloof. 如果越过了这些界限,美国人的身体会明显变得僵硬,他的态度也会变得冷漠。
2. 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。
3. 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。
4. The jelly will stiffen as it cools. 果冻冷却后会变硬。
5. Stiffen the cream by adding gelatine. 通过增加白明胶使奶油变硬。