on the house
US /ɒn ðə haʊs/
UK /ɒn ðə haʊs/
成语
免费的, 店家赠送的
provided free of charge by the establishment, especially a restaurant or bar
示例:
•
The dessert was on the house because it was my birthday.
因为是我的生日，甜点是免费的。
•
Don't worry about the drinks, they're on the house tonight!
别担心饮料，今晚它们是免费的！