None of these volcanoes was formed as a result of collisions between plates of the Martian crust—there is no plate motion on Mars.
这些火山没有一个是由于火星地壳板块之间的碰撞而形成的——火星上没有板块运动。
2
Although no form of matter yet discovered, moves as fast as or faster than light, scientific experiments have already confirmed that accelerated motion causes a traveler's time to be stretched.
虽然还没有发现一种速度与光一样或比光还快的物质，但科学实验已经证实，加速运动会延长旅行者的时间。
3
Although no form of matter yet discovered, moves as fast as or faster than light, scientific experiments has already confirmed that accelerated motion causes a traveler's time to be stretched.