ject

subject declin declin

投擲、噴射=jet

projector投影儀

inject注射

object反對 物體

subject   v.使某人遭受某事 n.主題

The parents are unwilling to subject their children to the unhappiness of  divorse.

區分：

reject 回絕 （很猛烈的）

decline委婉的拒絕 緩慢的下降 decline to sb`s inventation.

refuse 直白的拒絕