Its true. 是实在的。
No, Im serious. 不是，是真的。
kidding
n. 开玩笑
v. 开玩笑，戏弄；欺骗；胡闹，出洋相；山羊产羔（kid 的现在分词）
例句：
Im not kidding you. It does work.
我不是戏弄你，那的确有效。
Im just kidding.
我只是在开玩笑。
They're kidding themselves if they think it's going to be easy.
如果他们认为这会很容易，那是自己欺骗自己。
I thought he was kidding when he said he was going out with a rock star.
他说他在与一位摇滚乐歌星谈恋爱，我还以为他在开玩笑呢。
You've got to be kidding! I can't live here!
你在开玩笑吧！我不可能住这儿！
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