交换的最优条件的英文怎么说

交换的最优条件的英文：
condition for efficiency in exchange

This is a conditional ceasefire.
这是有条件停火。

Is there a remedy for this condition?
有没有解决这个情况的方法？

The condition of man . . . is a condition of war of everyone against everyone
人类的状态.是人与人对抗的战争状态

The service productivity is the function, including external efficiency, intestine efficiency and capacity efficiency.
服务业的生产率是一个包含有外部效率、内部效率和能力效率的函数。

The efficiency of the tandem system is perfect.
这个串联系统的工作效率无可挑剔。

To destroy or hinder the efficiency of; frustrate.
使不起作用使无效或限制其效力的发挥；阻挠、挫败

regional exchange
美国在纽约以外地区的证券交易所

This exchange takes place in the foreign exchange market.
汇兑是在外汇交易市场上进行的。

He gambles on the stock exchange.
他从事股票投机。