optional

Certain courses are compulsory, others are optional.

某些課程是必修的，其他是選修的。

牛津詞典

This model comes with a number of optional extras (= things you can choose to have but which you will have to pay extra for) .

這一型號(hào)有一系列可供選擇的附件，價(jià)格另計(jì)。

牛津詞典

A holiday isn't an optional extra. In this stressful, frantic world it's a must...

休假并非可有可無(wú)。在這個(gè)緊張而忙碌的世界，它是必不可少的。

Sex education is a sensitive area for some parents, and thus it should remain optional.

性教育對(duì)某些家長(zhǎng)而言是個(gè)敏感領(lǐng)域，因此應(yīng)該保持其非強(qiáng)制性。

Airfield: 4 Firehawks, which is enough to destroy an opposing Tech are optional.

機(jī)場(chǎng): 4個(gè)火鷹, 這足夠您摧毀敵人得高科了,云層推進(jìn)升級(jí)可選.

期刊摘選

Appends the specified element of List ( optional operation ).

在列表尾部添加指定元素 ( 可選操作 ).

期刊摘選

The appearance of two new optional color effect: soil and grass green bronze.

對(duì)于外觀,有兩種新的效果色可選: 土青銅色與草綠色.

期刊摘選

On lesser amounts, insurance is recommended but optional and taken out at your request.

在少許數(shù)額, 保險(xiǎn)被推薦但任意和被去掉根據(jù)您的請(qǐng)求.

期刊摘選

However, the alt attribute is optional and may be omitted from particular image elements.

然而, alt的屬性是可選的,甚至是可以忽略的.

期刊摘選

A general categorization ( optional ). Negative, epithelial cell abnormality, or other ( see interpretation below ).

大體分類 ( 可選擇項(xiàng) ). 正常, 或上皮細(xì)胞異常, 或其他 ( 參看以下描述 )

期刊摘選

Constructors have optional extra parameters for the comparison object.

構(gòu)造函數(shù)有可選的額外參數(shù)用于比較用的函數(shù)對(duì)象.

期刊摘選

The optional wind deflector minimizes drafts and wind turbulence, eliminating wind chill and maximising comfort.

作為備選設(shè)備的擋風(fēng)板也以有效的防止氣流干擾, 消除風(fēng)冷,優(yōu)化舒適度.

期刊摘選

Air pressure type cooling device are optional parts by customers.

可依客戶需求增設(shè)氣冷式冷卻設(shè)備.

期刊摘選

Black polyester paint; optional in other special paints on request.

黑色聚脂漆; 按訂貨要求可選用其它專門的油漆.

期刊摘選

The cassette player is an optional extra in this make of car.

這種型號(hào)汽車如需盒式磁帶唱機(jī)費(fèi)用另計(jì).

期刊摘選

Automatic thread trimmer ( optional ), to increase sewing efficiency and reducing production cost.

備有自動(dòng) 切線 機(jī)型, 可增加縫制效率降低成本.

期刊摘選

There are a range of optional units available depending upon work role and work setting.

有一系列的可選單元可根據(jù)工作的職責(zé)和工作設(shè)置而定.

期刊摘選

In this first form, the comma following the parameter declarations is optional.

在第一種形式中, 形參聲明后面的逗號(hào)是可選的.

期刊摘選

A variable automatic transmission , Mitsubishi's first , will be optional.

同時(shí)也有一款無(wú)極變速器作為可選配置.

期刊摘選

Optional argument which specifies what target to build in the subproject.

可選參數(shù)用來(lái)指定子項(xiàng)目將要構(gòu)建什么目標(biāo).

期刊摘選

Checks authorization for the given operation context and optional message.

檢查給定操作上下文和可選消息的授權(quán).

期刊摘選

Solid Stellite 6 wedge ( optional ) ensures low friction and long service life.

實(shí)心鎢鉻鈷合金6楔板 ( 選項(xiàng) ) 確保較低的磨損和較長(zhǎng)的使用壽命.

期刊摘選

The goods are optional, but only one.

這些物品是可以任選的, 但只能選一個(gè).

《簡(jiǎn)明英漢詞典》

It is optional with you.

那是你的自由.

《現(xiàn)代英漢綜合大詞典》

Attendance at the lecture is optional.

這一講座可隨意參加.

《現(xiàn)代英漢綜合大詞典》

The course consists of ten core modules and five optional modules.

這門課程包括十個(gè)必修單元和五個(gè)選修單元。

《牛津高階英漢雙解詞典》

Certain courses are compulsory, others are optional.

某些課程是必修的，其他是選修的。

《牛津高階英漢雙解詞典》

A holiday isn't an optional extra. In this stressful, frantic world it's a must.

休假并非可有可無(wú)。在這個(gè)緊張而忙碌的世界，它是必不可少的。

柯林斯例句