αν δεν 用英语:

He never speaks unless spoken to.

The strongest is never strong enough to always be master, unless he transforms strength into right, and obedience into duty. From there derives the right of the strongest.

A-ha-ha ... sorry. I forgot my contacts, Unless I'm right here I can't see it.

Every Tatoeba sentence should be commented and its translation discussed, unless it's completely obvious.

Unless otherwise decided by the directors, if the company has a common seal and it is affixed to a document, the document must also be signed by at least one authorised person in the presence of a witness who attests the signature.

No matter how learned one may be, he or she cannot be called a good person unless he or she has a sound mind.

At a directors' meeting, unless a quorum is participating, no proposal is to be voted on, except a proposal to call another meeting.

Killing is forbidden; every murderer is punished, unless he has killed accompanied by many men and to the sound of trumpets.

But it's true! Dima insisted. "They won't let me buy the suit unless I give them another 99 kopeks! Can't you wire me some money?"

You're not a serious mathematician unless you crumple up a piece of paper in frustration every twenty minutes, look off into space, and appear to be questioning your very existence.

If the Dynamic Approval Routing is used within an organization, approval will be sequential unless there are more than one approver for the same role, then approval will be parallel.

A recent analysis by Boeing forecasts that unless safety is improved, jet airliners could be falling out of the sky at the rate of once a week by the year 2010.

So anything you see on American restaurant menus labeled as "Kobe" isn't coming from Japan—unless it was smuggled.

It's impossible to find a plane ticket, unless you buy one in first class. / Sophie is not coming, unless her parents can take care of her kids.