【译文】我每天多次省察我自己：为别人做事有没有尽力，和朋友交往有没有不真诚，教别人的东西自己有没有研习好。
Innovation is the key to staying ahead in the dairy industry.
To understand humanity, we must first understand our origins.
The value and utility of any experiment are determined by the fitness of the material to the purpose for which it is used.