Backstand
张紧座; 后座; 支撑结构
🗣️ 情景例句
If you've been with someone for this length of time you'll have to ask yourself what reservations have I got?
如果你和某人生活了这么长时间，你得问一下自己，你对这段婚姻满意吗？
When did you buy the car?
你什么时候买的车？
It is said that a new policy is being put into practice in your foreign trade.
据说你们正在实施一种新的对外贸易政策。