问题描述：
英语翻译
Upgrade to next room category
Rates are subject to 15% surcharge ,valid from 27 April to 7 May 2007.Subject to availability.Terms and conditions apply.
尤其是Upgrade to next room category.还有Rates,be subject to 的用法,还有最后一句话,Terms and conditions apply.
请翻译一下Upgrade to next room category.
Upgrade to next room category
Rates are subject to 15% surcharge ,valid from 27 April to 7 May 2007.Subject to availability.Terms and conditions apply.
尤其是Upgrade to next room category.还有Rates,be subject to 的用法,还有最后一句话,Terms and conditions apply.
请翻译一下Upgrade to next room category.
问题解答：
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