exhausting

Cleaning the entire three-story house by herself proved to be an exhausting task for the elderly woman.

(Chinese) 独自打扫整座三层楼的房子，对这位老妇人来说是一项极其累人的任务。

The athletes found the training schedule exhausting, as they had to practice for six hours every day.

(Chinese) 运动员们觉得训练日程令人精疲力竭，因为他们每天必须练习六个小时。