2010 年，张清森按照计划为客户备好货后，收到客户邮件通知，要么降价一美元，要么就取消订单。尽管他们后来知道了，这是因为有人为了抢订单降价竞争，为了避免这批货烂在仓库只能接受。
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These items aren't permanent fixtures on the floor like furniture is — a random sock or pet toy could be laying somewhere that the robot vacuum has never seen it before, so these vacuums really need to be on their toes. Small obstacle avoidance cameras rely on AI to react in real time, adapting the cleaning pattern on the spot to avoid a run in.