假如你计算工厂外在现场的机器人，包括医疗、防卫，以及上门维修，那么全世界有800多万机器人。
If you count robots working outside factories in fields including medicine, defense, and home maintenance, there are more than 8 million of the machines worldwide.
以及为残疾人士提供上门电脑训练及维修服务等。
They also provided on-site computer training and repair services for PWD.
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