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
I understand.
我了解。
Many people were against the new freeway.
许多人反对新的高速公路。
What's Ron Marston like,Pauline?
波淋，朗。马顿是怎样一个人？