一言为定 短语 1. 一言为定的 Whiz's ; Sure 2. 一言为定! That is a bargain! 3. 一言为定。 You got a deal. 4. 一言为定. It's a deal. 5. 大丈夫一言为定! I will upon my honour, now. 6. 一言为定的誓言 Asseveration of reaching agreement verbally ; Convinced oath 7. 那就一言为定啦。 It's a promise then.