Pre-cambrian
先寒武纪前
🧩 词语组成解析
abbr. 炼油工程师（Petroleum Refining Engineer）
a. 寒武纪的\\nn. 寒武纪, 威尔士人, 寒武系
🗣️ 情景例句
May I ask how Mr. Mrs- is?
-先生（小姐）好吗？
Many kiss the baby for the nurse's sake.
醉翁之意不在酒。
It was the last day of the year and a large crowd of people had gathered under the Town Hall clock.
那是一年的最后一天，一大群人聚集在市政厅的大钟下面。