If strong headwinds blow her backward, Spotz can attach a parachute anchor to the stern that inflates underwater and slows reverse travel.
如果强大的顶头风吹得她的船向后转时，斯伯茨可以在船舵上加上一个降落伞防风锚，它在水下会膨胀，这样可以减缓划艇的向后移动。
Imagine a future where time travel is possible. We are free to travel backward in time to any point in history.
假设，在未来的某一天，时光旅行成为可能，我们可以穿越到历史上的任意时刻。
When the cylinder moves backward, the piston is driven to travel backward and generates negative pressure in the front chamber of the cylinder.
当气缸向后运动时，拉动活塞向后，料缸前腔产生负压。
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