They may feel tired, and though outwardly calm, can be irritable.

他们可能觉得累，所以尽管表面上平静，却可能容易发怒。

《柯林斯英汉双解大词典》

When you are actually writing, and working as hard as you should be if you want to succeed, you will feel inadequate, stupid, and tired.

当你真正用心去写作，为了成功而发奋努力时，你会感到自己水平太低、天资不足、疲惫不堪。

youdao

Right from the first verse, the lyrics of this song can totally be related to running: "' Cause sometimes you feel tired, feel weak, and when you feel weak, you feel like you wanna just give up."

从第一个，歌词完全地跟跑步有关：“因为有时你感到疲倦，感到虚弱，当你感到虚弱时，你感觉你想要放弃。”

youdao

The amount of weight you use should be challenging enough that your muscles feel tired by the end of the second set.

CNN: How much weight is needed to strengthen my bones?

Even the arguments about more contemporary and relevant issues, like Iraq or the War on Terror, feel tired and played-out: everyone, pro and anti-Hitchens alike, seems to be reading from the exact same script that they had back in 2003.

FORBES: The 'Unhitched' Controversy And Christopher Hitchens' Fondness for Leon Trotsky