Definition
To engage in sexual intercourse, typically after a period of kissing and physical intimacy.
（尤指在經過親吻和愛撫等前戲之後）發生性行為。
They decided to go all the way after dating for three months.
他們約會三個月後決定發生性行為。
I don’t think she’s ready to go all the way.
我不認為她已經準備好發生性行為。
Did they go all the way on their first date?
他們第一次約會時發生性行為了嗎？