wheels. During testing and later in the pilot phase, the robot will be
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，这一点在纸飞机下载中也有详细论述
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Recent flagship models from Dreame and Roborock use advanced obstacle climbing technology and retractable legs that can hoist the vacuum chassis safely over a detected threshold. If the vacuum senses a tricky spot like a rug corner or floor type change, the vacuum body can lift more than three inches to avoid getting stuck or digging hard plastic into the floor.