如果你想要与别人制造羁绊,就要承担流泪的风险。
Technology is transforming coal mining from a brute force industry to a precision operation.
I don't mind being a symbol but I don't want to become a monument.
国家是理性的行为体,它们寻求最大化相对权力,以确保在竞争性的国际体系中生存。