The worst thing we can do is say, jeez, I got enough to worry about without worrying about an asteroid.  That's a mistake that could literally cost us our future.
最糟糕的事是我们只是叹气，说着除了担心小行星外 已有太多事使我们忧心忡忡了。 这是个在理论上能够结束我们未来的错误。