Actually, space technology helps people on earth every day.

实际上，太空技术每天都在帮助地球上的人们。

If you knew this was your last day on earth...how would you want to spend it?

如果你知道今天就是你在世上的最后一天，你打算怎么度过呢？

Hot days on earth can cause wildfires, heat stroke in humans, and many other dangerous things!

地球上炎热的天气会导致野火、人类中暑和许多其他危险的事情！

Along the crowded path they bore her now, pure as the newly fallen snow that covered it, whose day on earth had been as fleeting.

他们从挤满各色人等的道路中抬着她走，她全身洁白得像是刚刚落到地面的雪花儿，而她在尘世上的日子竟转瞬即逝。

We are foreigners and strangers in your sight, as were all our ancestors. Our days on earth are like a shadow, without hope.

我们在你面前是客旅、是寄居的，与我们列祖一样。我们在世的日子如影儿，不能长存（或作" 没有长存的指望" ）。