一家公司计划开发一种原型除草机，它使用带有光学传感器和微处理器的刀片，通过颜色的深浅区别杂草和作物。
A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color.
这两个应用程序在搜索能力上是相当的，但区别在于客户机和服务器之间所使用的通信协议不同。
The two applications are identical in their search capabilities, but differ in the communication protocol used between the client and server.
对于重构方法的客户机来说，看不到区别。
To a client of a refactored method, there is no perceivable difference.
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