Laurentian
n. [地质] (加拿大东南部)劳伦系, 劳伦系岩石层\\na. 劳伦系的
🗣️ 情景例句
Susan and Harry have a sitter for Michelle in the city,
Susan和Harry在城里给Michelle找到一位临时保姆，
Don't make any mistakes.
别出差错。
Hello! Is there anyone at home?
喂！家里有人吗？