A choice of two from的意思|示意

How it works: Grab two books from a trilogy of your choice in each hand.

怎么做：从三本书里选两本书抓在手上，一手一本。

The choice of proper initial Angle of incidence makes a lateral shearing interference easy to realize between the two beams reflected from the front and back surfaces of a plane-parallel plate.

通过选择合适的初始入射角，使从平板前后表面反射的两光束实现剪切干涉。

Units can be constructed from a single alarm channel to a maximum of 128 channels, in any format, with ultra-bright LED illumination as standard and with a choice of two window sizes and six colours.

模块可以组装成任意结构，从有单一的警报主频到最多的128警报主频，并且有超亮的LED灯彩标准以及两种窗口型号和六种颜色的选择。

Two toning or color and chrome has become an increasingly popular choice for the owners of Tuner Cars who want a little more flair from custom made wheels with color matched centers.

两个调色或颜色和铬已成为越来越受欢迎的选择，并为业主调谐汽车他们希望多一点天赋，从习惯了车轮与颜色匹配中心。