“交易就此作废”
用英语怎么说？

Tyrion: "Lord Baelish, thank you for meeting me. I have a proposal that requires your unique talents. We must forge an alliance with the Vale. I want to marry Princess Myrcella to Robin Arryn." Littlefinger: "The Vale? Lady Lysa has shut herself away from the world. She will not easily agree to such a match." Tyrion: "Which is why I need you to negotiate it. If you succeed, I will name you the Lord Protector of Harrenhal. It is a grand title for a grand achievement." Littlefinger: "Harrenhal? That is a generous offer, Lord Hand. But what about the Queen? She will be furious if she finds out." Tyrion: "She will not find out until it is too late. This must be kept between us. If Cersei catches wind of this, the deal is off." Littlefinger: "You have my word. I shall depart for the Vale shortly to make the necessary arrangements."

提利昂：“贝里席大人，感谢你与我见面。我有一个提议，需要你独特的才能。我们必须与艾林谷结盟。我想把弥赛菈公主嫁给罗宾·艾林。”小指头：“艾林谷？莱莎夫人已经自我封锁，远离尘世。她不会轻易同意这桩婚事的。”提利昂：“这就是为什么我需要你去谈判。如果你成功了，我将任命你为赫伦堡的守护者。对于伟大的成就来说，这是一个伟大的头衔。”小指头：“赫伦堡？这真是一个慷慨的提议，首相大人。但王后那边呢？如果她发现的话，一定会勃然大怒。”提利昂：“在她发现之前一切都太迟了。这必须在我们的内部保密。如果瑟曦听到风声，交易就此作废。”小指头：“你有我的保证。我很快就会启程前往艾林谷，做出必要的安排。”