She was right on the button when she said I'd regret moving out.她说得太对了，我的确后悔搬了出去。It is essential to be right on the button in understanding what future growth means.正确理解什么是未来增长非常必要。Your guess was right on the button.你猜得一点不错。She got to our house at two, on the button.她两点钟到我们家，非常准时。