"Military folks move every two years generally, two to three years, and so that turnover and that constant influx of buying houses,buying cars, buying clothes for schools, is just a huge impact to the Enterprise community."
VOA: standard.2010.08.10
But things which were at rest will move at a constant velocity, opposite of the velocity that you have relative to me.
这些静止的东西都在匀速运动,方向正好跟你相对我运动的速度方向相反
You put a chunk of wood on a table and you try to move it at constant speed.
你把一大块木头放在桌子上,试着让它匀速运动
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