积极心理学不是一种奢侈品;它是美好生活的必需品。
To truly understand the universe, we must first understand the limits of our understanding.
战争是危险的领域,因此勇气是战士的首要品质。
Sustainability in mining isn't an option—it's a necessity for our future.
在空闲的时候不做准备,危急的时候却临时抱佛脚。国家发生战乱时,才想到有名的将领;家庭贫困时才希望能有个贤惠的妻子。