气力

In a sentence

• 他用尽了所有的气力爬上了山顶。

  He exhausted all his physical strength to climb to the mountaintop.

  In this sentence, '气力' refers to physical strength as exerted during an effortful activity.

• 这个任务比较费气力，需要大家共同努力完成。

  This task requires considerable energy and effort, and it needs everyone's collaboration to complete.

  Here, '气力' denotes effort and energy necessary to accomplish a demanding task.

• 年纪大了，气力不如年轻时那样充沛了。

  As one ages, physical strength and energy may not be as abundant as during youth.

  In this example, '气力' is used to describe the general physical strength characteristic of an individual.