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Thirty Million

是Thirty million。英文生字hundred, thousand 及 million 等與數值有關的名詞，若前面的字是數字或如 several, a few 等限定詞 determiner, 不論數值多少均不用加 's'。用作數量詞quantifier 時則需加 's'。例如︰ Thousands of people went to Wong Tai Sin Temple to worship the God on the first day of Chinese New Year.

我想是Thirty Million ,希望可以help you。

應該是:Thirty Million

Thirty millions

Thirty Million

thirty million