Yalnızca bir olası karar var.
- There's only one possible decision.
Tom ve Mary'nin yalnızca bir çocuğu vardı.
- Tom and Mary had only one child.
Here is the one I want to buy.
... only one-tenth of your income is taxed for Social Security. ...
... by physicists years ago. But there's one loophole. Only one. There's only one way ...