4.have sth up one's sleeve  
Steven:And I can't marry someone who always has another sex
tape or hidden agenda or surprise scheme up their sleeve.
我不能娶一个总是会爆料出性录像带或别有企图或出人意料搞阴谋的人。

have sth up one's sleeve:意思是秘而不宣的（阴谋或对策），字面上是藏
在袖子里的，联想一下就能知道衍生意是出人意料的事情，让人防不胜防。
例：I trust Shaun has another genius scheme up his sleeve?
    我能相信肖恩还会有什么高明过人的对策？