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。
States are rational actors that seek to maximize their relative power in order to ensure their survival in a competitive international system.
I don't count my sit-ups. I only start counting when it starts hurting.
智能化、网联化、电动化是汽车行业的未来。