One tool provides the ultrasound waves that are used to break down the cataract, and also contains a vacuum to hoover out the pieces.
一个工具提供用来粉碎白内障的超声波，而且也包含一个真空吸尘器将碎片吸出来。
One tool provides the ultrasound waves that are used to break down the cataract, and also contains a vacuum to hoover out the pieces.
一个工具提供用来粉碎白内障的超声波，而且也包含一个真空吸尘器将碎片吸出来。
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