single supplement (alsosinglepersonsupplement)

• 1.  

  N-COUNT（可数名词） A single supplement is an additional sum of money that a hotel charges for one person to stay in a room meant for two people. 单间附加费 (客人独住双人房时旅馆增收的额外费用)

  例：

  You can avoid the single supplement by agreeing to share a twin room.

  你如果同意与人共住双人房就可免交单间附加费。