经过一天的徒步旅行后，我们全都精疲力尽了。

After a full day of hiking, we were all ___fatigued.

长时间加班后，他感到精疲力竭。

After working overtime for long hours, he felt completely ___fatigued.

经过多年的频繁使用，飞机机翼的金属材料已经显示出疲劳迹象。

After years of frequent use, the metal in the airplane's wings showed signs of ___fatigue material.