我需要解释的是，我不满的原因是我室友不体谅的行为。

I must explain that the reason for my dissatisfaction is my roommate's inconsiderate behavior.

youdao

她丝毫也不体谅他的年龄，要求他干得像她一样卖力。

She made no concession to his age; she expected him to work as hard as she did.

《牛津词典》

他常常不体谅他的家人。

He's often inconsiderate to his family.

youdao