“之前的”造句

让我们再回到之前的那个话题。
If I may return to what we were talking about earlier.

在之前的几次飞行中，就已经察觉到机身有些摇晃。
Some oscillation of the fuselage had been noticed on early flights.

昨天拍卖之前的成交量很小。
Trading was very light ahead of yesterday's auction.