"The path to greatness is not always easy, but it is always worth it."

解释：甜味食物走肉，肉病的人不宜多食，说明饮食需与病症相宜。

Global collaboration is key to solving the complex challenges facing the energy sector today.

要想端正自身行为，先要端正自己的身心；要想处理好天下大事，先要处理好身边小事。