I won't go, and that's flat.

我不会去, 这是我最后的决定.

《简明英汉词典》

I'm not going out with you and that's flat!

我不跟你出去,说定了!

辞典例句

I must have some tonight and that's flat.

我今晚一定要一些,无二话可说.

互联网

I don't care whether you go on the outing, but I'm not, and that's flat!

我不在乎你是否出去远足, 但我不会去, 那是断然无疑的.

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