This focusing power is equivalent to the ability to read a newspaper at a distance of half a mile.
其强大聚焦功能，相当于半英里开外阅读一份报纸。
The doctor may choose to use an automated instrument that automatically evaluates the focusing power of the eye.
医生会使用一种自动化的仪器来检测出眼球聚焦光线的能力。
The doctor may choose to use an automated instrument that automatically evaluates the focusing power of the eye.
医生会使用一种自动化的仪器来检测出眼球聚焦光线的能力。
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