addition是可数名词还是不可数名词?急?addition
1.加,附加[U][(+to)] The addition of fruit makes the cereal taste good. 加了生果使谷类食物变得可口。
2.【数】加法[U] do addition and subtraction 做加减法 3.增加的人(或物);(房屋的)增建部门[U][(+to)] The baby is a new addition to our family. 那个婴儿是我们家新增的人丁。不成数