三人行，必有我师(焉)

成语
无可救药 (also 无药可救, 不可救药) beyond help (lit. no medicine that can help)
后患无穷 this will lead to a lot of trouble
无往不利 successful in every endeavor
( ”pinyin” )

词汇
结实, strong; 结合, combination; 结婚, marriage; 结束, end; 团结, unite; 总结, summary ( ”pinyin” )
https://mandarinbean.com/new-hsk-3-word-list/

Guardian:
你真是无可救药, you're hopeless
即便现在是非常时期，也应该讲究方式方法，要不然后患无穷, this may be an emergency but we still need to consider ways to cope, otherwise we'll find ourselves in great trouble
你偷天换日的异能真是无往不利啊, your supernatural ability to deceive is unfailing
沈教授，结婚了吗, are you married, Professor Shen?

Me:
现在得天天好好努力，不然考试的时候后患无穷。
电影结束时他们都哭起来了。