B-17s
【航空学】第二次世界大战中使用的一种四引擎中翼轰炸机\\nn. 17's = Flying Fortress
🗣️ 情景例句
We've only been here for a day,
我们到这里仅仅一天，
Since the contract is about to expire, shall we discuss a new one?
这个合同将到期，我们来谈谈新合同的事宜吧。
German is a more difficult language than English is.
德语比英语难学。