有谁知道我们要过多久才离开的翻译：Who knows how long before we have to leave 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Does anyone know how long we had to leave

Who knows how long before we have to leave

Some who did know how long we do want only then to leave

Who knows how long will it be before we have to leave

Who knows how long before we have to leave