求翻译：为了公平，和限制矛盾的发生，当天进行抽签仪式。纸条上都写清楚了值班的时间段，每一位同学都必须抽签，确定每一位同学的值班时间。如果同学之间双方都同意调换工作时间的情况下，可以调换工作时间。是什么意思？

To be fair, and limit the occurrence of contradiction, the same day as the draw. A piece of paper to write clearly on duty time, each student must draw lots to determine each student's duty hours. Students, both sides agreed to exchange the working hours can change the working hours.

In order to be fair, and to limit conflict to occur, and to draw on the same day. They are written on a piece of paper made it clear the watch the time period for which each student must draw lots to determine each student's watch. If both sides agree that between students who transfer to another jo

In order to fair, with the limit contradictory occurrence, carries on at the same day draws lots the ceremony.On the paper all wrote clear on-duty the time section, each schoolmates all had to draw lots, determine each schoolmate's on-duty time.If between schoolmate both sides both agreed exchanges

For fairness, and limit the occurrence of contradictions, to ballot on the day. Note clearly the duty period, each student must draw lots to determine each student's time on duty. If both parties agree to a transfer time between student cases, can change the working hours.

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