We had cleaned the room before you came.
你来之前，我们已经打扫完了房间。
Now we have cleaned the room, we can move the things in.
既然我们已经打扫完房间，我们可以把东西搬进来了。
The smell persisted even after we had cleaned the room.
即使我们打扫了房间，这个味道仍旧存在。
We had cleaned the room when he got there.
当他到那儿时，我们已经把房子打扫干净了。
We had cleaned the room when he got there.
当他到那儿时，我们已经把房子打扫干净了。
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