书籍 Four Corners 4 - 第 10 单元 B 课

without any uncertainty

无疑

an official who is in charge of a game, making sure the rules are obeyed by the players

裁判

a person

人类

used to introduce a new topic or information that is related to the ongoing conversation

顺便一提

to contact someone again later to provide a response or reply, often after taking time to consider or research the matter

重新联系某人