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
And I love you. Isn't that enough?
我爱你。难道这还不够吗?
Scratch my back and I'll scratch yours.
朋比为奸。
The instrument was bought by my grandfather many years ago.
是我祖父在很多年以前买的。