你曾经有弃掉未用完的香水吗？

Have you ever thrown away perfume that not use up?

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调解员及会议室服务将全收取已预订但时间未用完的费用。

The Mediator and the Conference Room Service will charge fully for any unused time reserved.

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顺便提一下，保管好您的兑换单，离开中国时您可以把未用完的人民币兑换成外币。

By the way, keep your exchange memo safe. You may convert the unused RMB back into foreign currency when you leave China.

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