求翻译：The Christmas subsidy is payable in November every year, together with the remuneration of the month. The amount being equal to the basic monthly remuneration of November of the year. In the first year of the appointment, the amount of Christmas subsidy shall be proportional to the time of service provided from the commencement of appointment to 31 December of the year, the proportional rate being the number of months of service completed till 31 December of the year divided by 12.是什么意思？

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