My office is in the seventh floor.

我的办公室在七楼。

youdao

Here's the seventh floor, my office.

七楼到了，我的办公室就在这层。

youdao

It runs down a shaft to the seventh floor.

它沿一个竖井向下直通到第七层。

youdao

It runs down a shaft to the seventh floor.

它沿一个竖井向下直通到第七层。

youdao