What does 别间 in 别间大学的男生都土里土气的 mean?
别 means &quot;not this&quot;, in other words, it means &quot;other&quot;
间 is a quantifier for 大学
You need to add a quantifier between 别 and 大学 because you need a quantifier when you count an object
You can also use
别的大学, 别所大学
to express similar meaning