You know the room is a rectangle 49 meters wide and 78 meters long.

你知道房间是一个长方形， 宽 49 米， 长 78 米。

The Hailuogou Glacier in the east has a huge icy waterfall measuring 1,100 meters wide, with a drop of more than 1,000 meters.

位于东面的海螺沟冰川拥有1100米宽落差超过1000米的巨大的冰瀑布。

Coincidentally just 16 hours after this meteor struck the earth, another asteroid that was fifty percent larger at 30 meters wide just barely missed the earth at a distance of only twenty-seven thousand seven hundred kilometers.

巧合的是，就在这颗流星撞击地球的 16 小时后，另一颗宽三十米、比它大一半的小行星就在距离地球 27700 公里的地方擦肩而过。

The most likely impacted with an asteroid 160 meters wide, which would be bad if it happened, but the odds are only one in 625 and it wouldn't even hit until sometime between 2185 and 2198.

最可能撞击我们的，是一颗宽 160 米的小行星，如果真的发生了那就很糟糕了，但这种几率只有1 / 625，甚至要到 2185 至 2198 年之间的某个时间才会撞击地球。