"by the dozen" in Chinese (Simplified)
按打成打地
Definition
以每十二个一组的方式出售、购买或计数某物；也常用来表示大量。
Usage Notes (Chinese (Simplified))
多用于鸡蛋、甜甜圈等以打为单位的商品，也可泛指“成批、大量”。属于口语表达。
Examples
Eggs are often sold by the dozen.
鸡蛋常常是**按打**卖的。
We bought cookies by the dozen for the party.
我们为聚会**成打地**买了饼干。
Flowers are sold by the dozen at the market.
花在市场是**成打地**卖的。
Donut shops sell favorites by the dozen because people love to share.
甜甜圈店会**成打地**卖受欢迎的款式，因为大家喜欢分享。
Mistakes happen by the dozen when you rush your work.
赶工时，错误会**成打地**发生。
He's got excuses by the dozen for being late.
他为迟到有着**一打又一打的**借口。