U1E27 | optional (option,opt)

Word of the day · Mar 21, 2026 · 1m

Optional (option, opt)【adj.】

1. available to be chosen but not obligatory可选择的，非强制的

Attendance at the meeting is optional.

会议出席是可选的。

A good optional course will broaden and deepen students' insights and knowledge.

一门好的选修课能扩大并加深学生的视野和知识.

-> option【n.】

1. something that you can choose to do in preference to one or more alternatives可选择的事物；选择；选择权

You have the option of staying here or leaving.

你可以选择留在这里或离开。

2. a feature that can be selected to enable or disable a particular function选项；设置

You can change the display options in the settings menu.

你可以在设置菜单中更改显示选项。

—> opt【v.】

1. to choose one thing or…