什么是heads up?

什么是heads up? Good heads up. just a heads up 電影,heads up是什麼意思? heads up seven up怎么玩? thank you for your heads up. they_____ knocked heads when they stood up Get up my heads and foot agreen 英语翻译Her carriage horses have to have their heads up. This is a heads up that it is coming.中文? Hold our heads up high,leaving a trace of regret .. 英语翻译If a tossed coin comes up 'heads',ten times in a row,is