International politics is a brutal and unforgiving arena, where states constantly strive to maximize their power and security.
国际政治是一个残酷而无情的舞台,各国不断努力最大化自己的权力和安全。
物理学的美丽在于它能够用简单的方式解释复杂的事物。
The truth is rarely pure and never simple.
"Innovation in cancer treatment comes from challenging the status quo."