可选项/这个选项可选 this field is optional
这个选项可选 this field is optional
可选项/这个选项可选 this field is optional
这一项可以不填 Olde-mailaddress
中一项可见式气垫 Visible Air
菜单项可用时文字颜色 Public TextEnabledColor As Long
逐项可微的 [数] termwise differentiable
逐项可积级数 [数] termwise integrable series
一项可靠的建议 a viable proposal
人民币资本项目可兑换 the convertibility of the RMB capital accounts
把程序划分为多个可执行一项可识别任务的方法。
Divide your programs into methods that perform one identifiable task.
服务的边界应当封装一项可重用、不受上下文约束的功能。
The service's boundaries should encapsulate a reusable, context-free capability.
本文将使用若干项可实现快速 Web 开发的前沿技术。
This article makes use of several cutting-edge technologies to allow for rapid Web development.
The other two you know are stuff you can add, and you know where you're adding those things, because the particle has a head start.
另外两项是可加可不加的,而且你也知道这两项是怎么来的,因为质点运动是有起点的
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