Pre-group
前群
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
group
[ɡrup]
n. 组，团体;群，批;（雕塑等的）群像;（英美的）空军大队;
vt.& vi. 使成群，集合;
vt. 分类，归类;
🗣️ 情景例句
He lost his money due to his own carelessness.
由于大意，他丢了钱。
It's more valuable.
这更有价值。
What do the machines do? asked Jim.
“这些机器做什么用？”吉姆问。