We'll only do it once— if at all.

我们就是干也只会干一次。

《牛津词典》

While the original aim was to raise the hull if at all feasible, the operation was not given the go-ahead until January 1982, when all the necessary information was available.

虽然最初的目标是在可行的情况下提高船体，但是直到1982年1月所有必要信息都具备时，这项行动才得到批准。

youdao

Work at home if at all possible.

如果可以的话，在家办公。

youdao

Senator Lodge continued. "A literacy test will bear very lightly, if at all, upon English-speaking immigrants or Germans,Scandinavians and French.

VOA: special.2010.05.20

I would be grateful if you would wait until that point if at all you possibly can. It just makes the whole thing work a little easier and it prevents that drop in the pit of my stomach when I see half of the class leave.

我将感激不尽,这样会好一点,以免我看到半数人走掉时,心情会受到影响。

耶鲁公开课 - 1945年后的美国小说课程节选

That's not a scientific term but the same psychologists were interested in studying how quickly you can-- if at all how long does it take to figure out somebody's sexual orientation?

这不是一个科学术语,这两位心理学家也很有兴趣研究,你能多快…,如果对方真的是同性恋,就能猜出他们的性取向？

耶鲁公开课 - 心理学导论课程节选

Worker classification issues are raised if at all in an income tax audit of the employer.

FORBES: Employers Beware of IRS' Illusory Worker Classification Program

Typically this occurs (if at all) while writing the article not before you start.

FORBES: Fourteen Points On Growing A Blog

Prolonged isolation was used sparingly, if at all, by most American prisons for almost a century.

NEWYORKER: Hellhole