It’s just referring to the principle and doesn’t need to be translated.
From the Wiki article:
“Yes, and…”, also referred to as “Yes, and…” thinking, is a rule-of-thumb in improvisational comedy that suggests that an improviser should accept what another improviser has stated (“yes”) and then expand on that line of thinking (“and”).[1][2][3] The improvisers’ characters may still disagree.[1]
It’s just referring to the principle and doesn’t need to be translated.
From the Wiki article: