🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
[经] 买者
🗣️ 情景例句
Are you having a good time, Susan?
玩得高兴吗， Susan？
She looks so pale, she must be ill.
她脸色很苍白，一定病了。
To get a full appreciation of what this means we must turn first to some recent human inventions.
要透彻理解这句话的意义，我们应先回顾一下人类最近的几项发明。