Sustainability is no longer an option; it's a necessity for survival in our industry.
The hepatitis C discovery was not just my work; it was the result of decades of collective effort.
引力的存在是最明显的实验事实，但从理论角度来看，它是最神秘的力量。
可持续发展不是一种选择；它是我们对后代的责任。