The impact of a scientific discovery can be profound, often reaching far beyond the initial expectations.

The discovery of exoplanets has opened a new window on the universe, allowing us to explore worlds beyond our solar system.

有一个人从天堂来到人间旅游，他所使用的是有效三十天的减价票，他试图要把他的回程票卖掉。

记忆是我们随身携带的日记。

The economy of the future is one where growth is decoupled from the consumption of finite resources.

礼貌，并不需要花钱。用完马桶后，把马桶盖放下；上电梯时，耐心等别人出来再进去；把购物车放回指定区域；在借东西时，归还时要东西的状态要比你借的时候还要好（例如给车加满油、把物品清理干净）。