With so much stuff in space, and a limited area around our planet, the government wants to reduce the chances of a collision.
鉴于太空中的物质很多，而地球周围的区域则有限，政府希望减少发生碰撞的机会。
2
I know this area should actually change during the collision -so I am just going to estimate it.
我很清楚，接触面面积会在撞击过程中发生改变——所以我要试着估算出它的具体值。
3
The earthquake's location was in what geologists in the area call the East Seismic Belt, where earthquakes are caused by the collision between the Philippine plate and the Eurasian plate.