The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.

善良是一种聋人能听见、盲人能看见的语言。

共享电子对构成了化学键。

You can't change what's going on around you until you start changing what's going on within you.

我们生产的每一吨骨料都承载着对客户和社区的责任。

解释：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。