权力平衡是维持国际体系和平的唯一途径。
The balance of power is the only way to maintain peace in the international system.
即使可以传达,也无法被理解。
数学的研究对科学的发展就像空气或水一样。
在采矿业中,效率和环境保护必须齐头并进。
Efficient market theory is correct in that there are no gross inefficiencies, but we look at anomalies that may be small in size and brief in time.