Pre-opg
[经] 开盘前
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
[医] 氧基聚明胶
🗣️ 情景例句
Good-bye, and thanks for bringing Gemma in.
再见，谢谢你们把Gemma送来。
Do you often learn geography on the weekend?
你常常在周末学地理吗？
To serve the people well, I study hard.
为了更好的服务于人民，我好好学习。