You and your big yap 都是你和你那张大嘴巴
What a blabbermouth 多嘴婆! You didn't have to tell everybody. 你犯不着逢人便说. Traitor! You ratted on us. 叛徒! 你做奸细告发了我们. That's the way it was. 整个来龙去脉就是这样. That's the whole story. 整个事情的真相就是如此.
That explains it. 原来如此. I hate last minute surprises. 我讨厌到了最后一刻才吃一惊. Why did it take so long to come out? 干嘛如此费劲才说出口呢?