It’s on me是什么意思

  英文中，It's on me. 也是“我请客。”的意思。 再比如，一个人去吃饭，正巧饭店有活动，自己是这个饭店的第1万个顾客，免单了。这里就可以说：I went to a restaurant last night. I was the ten thousandth customer, so my dinner was on the house...