Time will show which of us is right.

时间会证明我们谁是对的。

But only time will show how  much it will exactly cost.

但只有时间才能证明它到底要花多少钱。

I am very confident that additional observations over time will show that it is actually not on a collision course with Earth.”

我非常有信心， 随着时间的推移， 更多的观察将表明它实际上并没有与地球发生碰撞。”