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- essential optional user facility [计] 基本的任选用户设施
- optional user facilities 任选的用户功能
- optional user facility 可选用户机制
- The optional user installable bezel is available for applications requiring a more finished appearance. 可选的用户安装面板可应用需要更多的成品外观。
- A discrete collection of bytes comprising at least one header and optional user data. 一个离散的字节集合，包含至少一个头部和用户选项数据。
- Common facilities are optional CORBA services. 公共设施是可选的CORBA服务。
- The insurance cover is optional. 保险范围可以随意选择。
- A 4-speed automatic transmission is optional. 四段自动变速器是可自由选择的。
- Industry is a heavy user of electric power. 工业需耗费大量的电力。
- Any options users set should be remembered, so that the options remain in effect until manually changed. 无论用户设置的选项是什么，程序都应该记住。 这样一直保留这些选项，直到用户手工将其改变。
- An optional academic course or subject. 选修的科目选修课程或课题
- The cassette player is an optional extra in this make of car. 这种型号汽车如需盒式磁带唱机费用另计。
- You must do it; you have little option. 你必须做,你没有选择的余地。
- It is at your option to stay or leave. 去留随你的便。
- You must do it; you have no option. 你必须做，你没有选择的余地。
- She has taken an option on that piece of land. 她已取得那块土地的购置权。
- Permitting discretion; optional. 允许自行处理的; 随意的
- The facilities have been adapted to give access to wheelchair user. 接近;通道,入口;接近或进入的方法。
- The former option favours the married man. 前一种选择对已婚男子有利。
- Our company is the biggest user of electricity in this area. 我们公司是这个地区最大的用电户。
