每一项的用法和样例：
例句
-
数据的一种集合，其中每一项可唯一地被一个标号或相对于其它项的位置或某些其它方法所标识。
A collection of data in which each item is uniquely identified by a label, by its position relative to the other items or by some other means. -
他对每一项决定都感到焦虑不安。
He agonizes over every decision. -
她对账单的每一项目都仔细查算。
She niggled over every detail of the bill.
