Kimse kazanın nasıl olduğunu kesin olarak bilmiyordu.
- No one knew for certain how the accident happened.
Ben onun ne zaman geleceğini kesin olarak bilmiyorum.
- I don't know for certain when he will come.
For certain.
... away or making certain guns illegal. We, of course, don't want to have automatic weapons, ...
... Or I couldn't go hang out with certain people because they ...