It is to find the area of a given region r.
这是用来找出给定区域r的面积。
To rebuild a file system, use the -r switch.
要重建一个文件系统，可使用-r 命令行开关。
Please arrange to cover the consignment against A. R.
请安排为这批货物投一切险。
C-P-R is designed to increase the natural ability of a person's heart and lungs.
心肺复苏术可以增强人体心脏和肺部的自然功能。
Take a F-R-E-E TOUR to learn how you can achieve your dreams the same way.
以歼住宅娥娥游学梦你怎么能达到同样的方式。
Take a F-R-E-E TOUR to learn how you can achieve your dreams the same way.
以歼住宅娥娥游学梦你怎么能达到同样的方式。
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