中心地是总旅行距离最小的点。

孩子能独立活动时，父母可带领孩子一同认识世界。

The key to successful investing is to have the patience to wait for the right opportunity.

"Growth mindset is the belief that your abilities can be developed through dedication and hard work."

最好的解决方案往往来自于倾听那些每天在土地上劳作的人。