"不到"的意思是数量或时间还没有达到某个点，比如"不到一个小时"。

"不到" means that a quantity or time has not yet reached a certain point, such as "不到一个小时" (less than an hour).

它也可以跟在动词后面，表示没有做成，比如"看不到"、"买不到"。

It can also follow a verb to indicate something was not achieved, like "看不到" (cannot see) or "买不到" (cannot buy).