Definition
A principle indicating that people will receive something or be dealt with in the order they ask or arrive.
先來先得
Due to limited seating, concert tickets will be sold on a first come, first served basis.
由於座位有限，音樂會門票將按照先到先得的原則出售。
We are offering free coffee on a first come, first served basis during breakfast hours.
我們在早餐時段提供免費咖啡，先到先得。
This promotion will be on a first come, first served basis, while supplies last.
本次促銷活動將按照先到先得的原則進行，售完即止。