如果发生;万一;结果;到头来
编辑释义电影里 95%
如果发生;万一
If the situation mentioned happens, or as a precaution for that possibility.
牛津电影里 5%
结果;到头来
when the situation actually happened
释义来自《牛津高阶英汉双解词典》第 9 版