exercise  

行使，执行

【例】That’s an accident over which the Sellers could exercise no control. Please contact the insurance company for settlement.

那是卖方无法控制的事件，请联系保险公司要求解决。

exert

【1】尽（力），发挥（威力、影响等）

【例】You should exert your utmost to push the business through.

你们应尽最大努力使业务成交。

【2】exert oneself努力

【例】We have been exerting ourselves to prevail upon our client to accept your price of £30 per dozen/set.

我们一直在努力说服我方客户，接受你方每打/套30英镑的价格。

exertion  

努力，发挥作用

【例】We agree to make [use] our best exertion to expedite shipment of the goods.

我们同意尽最大努力加速装运该货。