Push the Sport Plus button to get maximum attacking performance and a valve closes inside the airbags to halve their volume, instantly stiffening the springs. 推动体育加按钮最高攻击性能和关闭阀门内的安全气囊的数量减少一半，立即变硬的泉水。
Cigarette smoking also leads to stiffening of the arteries and further eleation of the blood pressure. 吸烟也会导致血管壁的硬化同时进一步引起血压升高。
stiffening英英释义
Noun:
the act of becoming stiff;
"stiffening his shoulders, he prepared to advance"
