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鐵幣3484 元文章782 篇聲望1248 枚上次登入09-9-1精華0註冊時間06-4-16UID249549
 
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| These seats are reserved for senior or persons with disability. 
 資料來源When we say persons we are thinking of ones, individuals with identities; whereas when we say people we should have in mind a very large group, an indefinite and anonymous mass
 Probably the disabled are special identities, so persons are used.
 
 Also, as other sources suggest, persons are used in formal and legal context.  Since it is a sign for everyone to notice, formal wording is opted.
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