除非必须出城，否则每个星期我都会陪伴母亲去购物、看医生。

Unless I have to be out of town, each week I take my mother to do her shopping and visit the doctor, providing company and transportation.

youdao

错误处理是不中断的(除非必须如此)。

Error handling isn't disruptive unless it has to be.

youdao

除非必须参加，否则，他是不会参加的。

Only if you compete, otherwise, he won't compete.

youdao

They cannot rest quietly in Hades unless their body has been properly buried; so you got to do it.

他们无法安息于地府,除非妥善安葬他们的肉身,所以必须要好好处理死者的尸体

耶鲁公开课 - 古希腊历史简介课程节选

So, that means he's got to make his line unless he comes up with some clever trick, the same size as the other guy.

所以,这意味着除非他想出别的好点子,否则他就必须使他那一排的规模,和对方的一样

耶鲁公开课 - 古希腊历史简介课程节选

The ones who would conserve energy, that is they were sedentary when possible, other then when they had to go get food would again not waste their calories but would save them and contribute to the gene pool.

那些保存能量的人,那些能躺不坐,能坐不站的人,除非必须再次寻找食物,否则是绝对不会浪费能量的人,也是对基因库有贡献的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选