试阅的英文：
trial subscription

trial是什么意思：
n. 审讯；试验，试用；磨难；努力；选拔赛
adj. 试验的，试用的；审讯的

Trial by ordeal.
神裁法。

The trial attracted wide attention.
此案审理引起了广泛关注。

The boy is a trial to his parents.
这男孩是他父母的包袱。

It is exciting to watch motorcycle trials.
观看摩托车比赛让人很兴奋。

You have to be very serious in trial courts.
在法庭上，你应该态度严肃。

subscription是什么意思：
n. 会员费，用户费，订阅费；捐助款
adj. 收费的

They decided to raise the money by subscription.
他们决定靠募捐的办法来筹集这笔款子。

subscript variable symbo
下标变量符号

I used a subscript.
我用了脚注。

He discontinued his subscription to the magazine.
他停止订阅那本杂志。

In circumstances where there is no ambiguity the subscripts are omitted
在不会引起含糊不清的情况下，下标可以省去。