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
It's so good to have you home again ...
真高兴 ，你又回家了……
You had better not bother him right now.
你现在最好不要去打扰他。
Our knowledge of the oceans a hundred years ago was confined to the two-dimensional shape of the sea surface and the hazards of navigation presented by the irregularities in depth of the shallow water close to the land.
100年前，我们只知道海洋是二维平面形的，以及靠近陆地浅水区的深浅不一能给航行带来危险。