求翻译，下面是句子，这个房间有股霉味，一定是好久没住人了。

1、这个房间有股霉味，一定是好久没住人了。应该这样的英文表达：
This room has a musty, must be haven't live for a long time.
2、英文翻译现在发展也非常迅速，划词翻译就是一个正面。2345一个浏览器就有这种功能，打开2345浏览器，右上角就有划词翻译功能，直接点击以下选择安装，就顺利完成安装了，只要有汉语或者英文词组、原文等都可以用鼠标选择以后，就可以看到翻译结果。何不试着尝试自己翻译英文的成就。

这个房间有股霉味，一定是好久没住人了。
This room smells of stale , it must have been unused

for a long time.

下面是英文翻译：
It has a musty smell in thous room. It must not has been occupied for a long time.

The room is full of mildewing smell, it must been vacant for quite long time.

The room smells of stale air. It must have been vacant for a long time.