Precambrian
n. 前寒武纪, 前寒武纪岩
🗣️ 情景例句
How long has he held office?
他已任职多长时间了？
Each item is to be wrapped separately in gerase-paper.
每件货物应单独用油纸包好。
Over the years, one may well become a authority on one's hobby and will very probably be asked to give informal talks to little gatherings and then,
一人积了多年经验会成为自己这种爱好的权威，很可能应邀在小型集会上作非正式的讲话。