尽管我们已经申请了21天免费用箱期的翻译：Although we have been applying the box for free 21-day period 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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Although we have been applying the box for free 21-day period

Although we already applied 21 day free to use the box time

Although we have already applied for 21 days for free of charge for boxes

Although we have been applying the box for free 21-day period