exertion
n. 费力，努力；运用，行使
复数 exertions
例句
Climbing further, with renewed courage, he at last saw his goal before him, but not without long and weary exertion.
他又重新鼓起勇气，继续往上爬，他终于看到了眼前的目标，但还需要经过漫长而疲惫的努力才能到达。
He clearly found the physical exertion exhilarating.
他明显发现体力消耗令人愉悦。
《柯林斯英汉双解大词典》
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。
《牛津词典》
