Precambrian
n. 前寒武纪, 前寒武纪岩
🗣️ 情景例句
Hi, Dad. Everything's fine.
嗨 ，爸爸。一切都好。
Exchange is no robbery.
公平交易并非强行夺取。
These friendly dogs, which were first brought from Asia, were used as watchdogs even in Roman times.
那些最先从亚洲引进的狗，待人友好，早在罗马时代就给人当看门狗了。