来自exert, 行使，竭力。

1. Age diminishes the heart's ability to pump harder and faster under exertion.

随着年龄的增加，人在消耗体力时心脏的输血能力和输血速度会有所减弱。

2. He clearly found the physical exertion exhilarating.

他明显感觉体力劳动令人愉快。

3. In the exertion Tompkins' hat had become dislodged.

汤普金斯的帽子被一把拽了下来。

4. She was hot and breathless from the exertion of cycling uphill.

她骑车上山累得全身发热，喘不过气来。

5. We were sweating profusely from the exertion of moving the furniture.

我们搬动家具大费气力,累得大汗淋漓.