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ʧЧĽ[expire;lose efficacy] ʧȥ ԭ Ч ͬʧЧ ϸ ʧȥЧ ɳ͡ ǡ һԴϸĩҶ...


֪ʧЧʲô˼

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ʧЧ˼ʧȥЧ 1ЧʱޣʧȥЧļͬһЩʱ֤ȯڳ涨ʱ...


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塣ʧЧ:,㲿ʧȥԭ涨ĹܳΪʧЧʧЧȫɥʧԭ;ܽͺ˻,ʹûʧȥ...


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غɣеغɡغɡʴۺغɵɥʧ涨ĹʱΪʧЧʧЧʽ 1. 2....


ʧЧЩ?

ڲѧУʧЧͨʧЧʧЧƣʧЧ1ʧЧ ʧЧָܵ...


ʲôʧЧ?

ʧЧָϻ򹹼ܵijûú޷ټػʹҪ״̬ʽ£1...


ʧЧӢô˵?

ʧЧӢexpireinvalid1.expire÷ expireһʣʾڡֹʧЧͨ...


ʲôʧЧ?ʧЧʽҪЩ

У㲿ʧȥԭ涨ĹܳΪʧЧʧЧȫɥʧԭܣܽͺ˻...