To protect water hammer, the technologies of enlarging slow-closing time, prolongating closing distanceofrun and pressure relieving are adopted in this device.
为防止水击采用减缓关闭时间，拉长关闭行程和向外泄压等措施。
2
Pronghorn, dependent on distance vision and speed to keep safe from predators, traverse high, open shoulders of land, where they can see and run.
叉角羚依靠远距离视觉和速度来躲避捕食者，它们在开阔的高地上穿行，在那里它们能看见东西并追逐它们。
3
If you are making a long distance call on a public telephone and run out of money, give the number on your phone to the person you're talking to. Then hang up the receiver and he can call you back.