optional

[US]/ˈɒpʃənl/
[UK]/ˈɑːpʃənl/
Frequency: Very High

Translation

adj. 可选择的, 非强制的

Phrases & Collocations

optional course

选修课,选修课程

optional parameter

任选参数,可选参数

optional exercise

自选动作

optional equipment

【计】附加设备;任选设备

optional item

可选择项目

Example Sentences

Wearing a mask is optional in some countries.

在一些国家戴口罩是自愿的。

Attending the meeting is optional, not mandatory.

参加会议是自愿的,不是强制的。

Adding extra cheese is optional for the pizza.

给披萨加额外的奶酪是可选的。

Taking a break during work hours is optional.

工作时间休息是可选的。

Filling out the survey is optional but encouraged.

填写调查问卷是可选的但鼓励。

Buying insurance for the package is optional.

为包裹购买保险是可选的。

Including a cover letter with your resume is optional.

在简历中附上求职信是可选的。

Choosing a dessert is optional at this restaurant.

在这家餐厅选择甜点是可选的。

Attending the after-party is optional for all guests.

参加欢迎会对所有客人来说都是可选的。

Using a pen or pencil is optional for the exam.

考试时使用钢笔或铅笔是可选的。

Real-world Examples

Last year the Supreme Court made the Medicaid expansion optional.

去年最高法院宣布此次医疗普及政策并非强制执行。

Source: The Economist - Comprehensive

And the other optional component here is the introduction.

其他的可选组成部分是引子。

Source: Listening to Music (Video Version)

152. The optional helicopter is adopted to help the optimistic helpless in the hell.

可选用的直升飞机被用来帮助地狱里那些乐观的无助者。

Source: Remember 7000 graduate exam vocabulary in 16 days.

At my university, there is no division between compulsory and optional modules.

在我的大学里,没有必修课和选修课的划分。

Source: Fastrack IELTS Speaking High Score Secrets

And let's see, the optional extra is the Tower of London.

让我看看,这个团可额外选择参观伦敦塔。

Source: Cambridge IELTS Listening Actual Test 4

Chocolate petit four, plus the optional cigar.

巧克力花色小蛋糕,外加可选的雪茄。

Source: Gourmet Base

White beard and red clothes are optional.

我这个圣诞节要工作。什么工作?扮圣诞老人!是否要穿戴白胡须和红衣服可以自己选。

Source: 2022 Intensive Listening

31.the employment of pilot is optional (selective).

雇用引航员是任意的。

Source: Maritime English listening

In the word " almond" the L is optional.

在“almond”这个单词中,L 可以发音,也可以不发。

Source: Max takes you to learn pronunciation.

Getting to the summit is optional.

到达顶峰不是必须的。

Source: Connection Magazine

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