Macys 上现在也有石头的机器人卖了，还在打折
https://www.macys.com/shop/featured/roborock?ss=true
Qrevo Pro 这款机器人性价比很高，有水箱，也可以积尘，基本功能都有了，价格不错可以入
https://www.macys.com/shop/product/roborock-qrevo-pro-robot-vacuum-mop-with-flexiarm-design-edge-mopping-dynamic-hot-water-mop-washing-auto-mop-drying-intelligent-dirt-detection-7000-pa-suction?ID=19287797
