cartons
A carton is a plastic or cardboard container in which food or drink is sold.
A two-pint carton of milk is cheaper than two single pints.
一盒两品脱的牛奶比两盒一品脱的要便宜。
You can use carton to refer to the carton and its contents, or to the contents only.
He went to the shop for a carton of milk.
他到店里买了一盒牛奶。