生活即教育。

The more you speak, the more likely you are to say something foolish.

乌鸦聚集在一起，虽然看上去很和好，实际上并不亲密；不慎重地结交朋友，虽似牢固，终必破裂。

Sustainable quarrying isn't an option; it's our obligation to future generations.

Every tree planted today is a legacy for future generations.

以往的事过去了便不再重提，现在的事做一件有一件的功劳，未来的事情省一件便省去许多麻烦。