可持续性必须成为每家化工企业战略的核心——它不再是可选项。

Purchase the most recent tourist guidebook to your home town or region. You’ll learn a lot by playing the tourist once a year.

求学的人必须先认识仁。仁就是与万物浑然一体的境界。

The wild is a place of opportunities. To survive, you have to seize them.

「释义」：人要在具体事务中磨炼，才能真正站稳脚跟。