身高不是问题。翻译

the height of a person doesn't matter at all.(一个人的身高完全不是问题。)

whether one is tall or not won't be the problem.(高矮不成问题。)

这两个都是就是说“身高不会影响什么什么”，不过如果楼主的意思是恋爱的那种“身高不是问题”，那最好说：
“the difference of our height won't bother at all，right?it really doesn.t matter.”
(身高的不同完全不会影响咱们的，对不对？它完全不是问题。)

---gelumi~XD 总考虑很多语境 呵呵

The height is not a problem.
It doesn't matter how tall you are.

Height is not the issue

The height is not the obstacle

A person's height is not a problem.

The height is not a big deal!