除非

only if (..., or otherwise, ...) / only when / only in the case that / unless

abbr. for 非洲[Fei1 zhou1], Africa

to not be; not / wrong; incorrect / non-; un-; in-; de- / to reproach; to blame / (coll.) to insist on; simply must

to get rid of / to remove / to exclude / to eliminate / to wipe out / to divide / except / not including

If you don't want anyone to know, don't do it (idiom). fig. If you do something bad, people will inevitably hear about it.