牛津电影里 100%
问题是;麻烦的是;只是;不过
used before mentioning a worry or problem you have with sth
The only thing is, I'm staying at the Athletic Club and it's strictly stag, so...
The only thing is, you'll be awfully lonely, darling, at the start.
释义来自《牛津高阶英汉双解词典》第 9 版