asteroid相关的词根或词缀是: astroaster

复数： asteroids

A large asteroid strike would do yet more damage .

大的小行星撞击甚至会对全球产生更大的损坏。

Now bring on that asteroid .

现在让小行星放马过来吧。

The asteroid would hit earth in less than a day .

小行星会在不到一天的时间内撞击地球。

But could asteroid deflection projects have a dark side ?

可是，小行星偏移计划会不会有阴暗面呢？

Of course there are no records of death by asteroid .

当然了，由小行星致死的人数没有记录。