三人行，必有我师(焉)

语法
既 + V (phrase) 1 + 也 + V (phrase) 2 "both X and Y" (bottom of page)
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22both%E2%80%A6_and%E2%80%A6%22_with_%22ji...you%22

词汇
同时, meanwhile; 同事, colleague; 同样, the same; 不同, different; 相同, identical ( pinyin )
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
既不在地星人身边，也不在祝红身边, he's neither with the Dixingren nor with Zhu Hong.
上午他既没有课也没有研究任务, in the morning he has neither classes nor research duties
我跟你介绍一下，这个是我同事张若楠老师。这位是..., Let me introduce you, this is my colleague Professor Zhang Ruonan. And this is...

Me:
我既没有空去，也不想去。
人类们都出去上班。同时，猫猫计划午睡策略。

语法
既然 + fact +（那 +）question, "given X, why would you do Y?" (bottom of page)
https://resources.allsetlearning.com/chinese/grammar/Expressing_%22since%22_with_%22jiran%22

词汇
秋天, autumn (pinyin in tags) Seasonally appropriate, at least for us northern hemisphere people!
https://mandarinbean.com/new-hsk-2-word-list/

Guardian:
你既然都知道，为什么非要一意孤行? so if you know all this, why do you insist on having your own way?
既然你一定要杀一个人，那杀一个年轻的岂不是更好吗, given that you have to kill someone, isn't it better to kill someone young?
地星正直多事之秋, honestly Dixing is troubled just now [多事之秋 doesn't literally have anything to do with autumn, but it's as close as the script gets, and also I like it]

Me:
你既然不爱吃辣，为什么敢点火锅？
秋天比夏天一百倍好。