"其中一之手機是真的"這句英文怎麼寫? 就是一堆假的玩具手機內,有一隻是真的 要用true來形容還是??

true = 真實/實在的 ，不是物件真假，而是事情的真假。

物件的真假又有分假冒的真假和像你這問的玩具跟真是可用的東西。

counterfeit 對 genuine是假冒對正貨；

你的假玩具和真電話是toy phone and real phone.

Among those mobile phones, only one is real.

"其中一之手機是真的"這句英文怎麼寫?

Among them, one handset is genuine.

Many are counterfeit and made in Mars by alien robots.
Others are virtual and exist only in your imagination.