unless به انگلیسی
From Longman Dictionary
un‧less /ʌnˈles, ən-/ ●●● S1 W1 conjunction
used to say that something will happen or be true if something else does not happen or is not true
می گفت اگر چیز دیگری اتفاق نیفتد یا درست نباشد چیزی اتفاق می افتد یا درست می شود
Example
Unless he’s a complete idiot, he’ll understand
Don’t call me at the office unless it’s absolutely necessary
Unless the weather improves, we will have to cancel the game
Unless you are a military fan, the Pentagon tour isn’t very exciting
You won’t pass your examinations unless you study hard