What is a night room?

One night refers to staying in a hotel room for one night, which is the abbreviation of one room for one night. Staying in one room for two days is called a two-room night, or staying in two rooms for one night is also called a two-room night. A measurement word used by company finance to calculate business trip expenses, or used by hotels to calculate accommodation expenses.

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Just like the number of aircraft sorties, one aircraft flying once is called one sortie, one aircraft flying twice is called two sorties, and two aircraft flying once each is also called two sorties.