不缩写,难道你需要把那些号码都拼出来吗?
其实规则很简单,1 加 st,2 加 nd,3 加 rd ,其他的都加 th.
举几个例子：first (1st),second (2nd),third (3rd),fourth (4th),...thirty-fifth (35th),thirty-six (36th),...eighty-second (82nd),eighty-third (83rd),...nineth-nine (99th) and one hundredth (100th).
或许你没想清楚吧?每个月份都没有100天呀!