Pre-tr tube
[电] 预-TR管
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
[计] 磁带记录器, 磁道, 磁带驻留, 故障报告
🗣️ 情景例句
That's what I thought.
我也正这样想。
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
Then you'll see the sign for the rest rooms.
你就可以看到厕所的牌子了。