可选配用英语怎么写

Optional

选配───Optional;可───can

Certain courses are compulsory, others are optional.───某些课程是必修的，其他是选修的。

The appearance of two new optional color effect: soil and grass green bronze.───对于外观,有两种新的效果色可选: 土青铜色与草绿色.

Black polyester paint; optional in other special paints on request.───黑色聚脂漆; 按订货要求可选用其它专门的油漆.

Automatic thread trimmer ( optional ), to increase sewing efficiency and reducing production cost.───备有自动切线机型, 可增加缝制效率降低成本.

In this first form, the comma following the parameter declarations is optional.───在第一种形式中, 形参声明后面的逗号是可选的.

Airfield: 4 Firehawks, which is enough to destroy an opposing Tech are optional.───机场: 4个火鹰, 这足够您摧毁敌人得高科了,云层推进升级可选.

A holiday isn't an optional extra. In this stressful, frantic world it's a must.───休假并非可有可无。在这个紧张而忙碌的世界，它是必不可少的。

Checks authorization for the given operation context and optional message.───检查给定操作上下文和可选消息的授权.

The goods are optional, but only one.