three days later
三天后到
Arrive in three days.
— 星际旅行2：可汗怒吼 (1982)
三天后我们会回来。
We'll be back in three days.
三天后，我照例每月和大卫聊一聊我正在做的事。
Three days later, I had my usual monthly chat with David about what I was working on.
等了三天后
After waiting for three days
— 落水狗 (1992)
幸运的话，他们三天后会回来
If we're lucky, they'll be back in three days.
— 西部往事 (1968)