km is a written abbreviation for . 公里
the INTERNET DOMAIN NAME for Comoros 科摩罗
If a spacecraft travels faster than 11 km a second, it escapes the Earth's gravitational pull.
如果一架宇宙飞船飞行超过每秒11公里,它就能摆脱地球引力。
For those uninitiated in scientific ocean drilling, the previous record was a little over 4 km.
可以告诉没有海洋科学钻探知识的人,先前的纪录是四公里过一点儿。
距离地球表面5百万公里。
There's no big city within 200 km, but tourists from all over the world manage to find it.
VOA: standard.2010.03.29
Then, I tell you I went for 5 km on the second day and another 5 km on the third day.
然后我第二天行进了5公里,第三天又走了5公里
You can deal with this by saying not just 5 km, but plus or minus 5 km.
你不能只说5公里,而应该是+5或者-5公里
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