布拉德说：“这台机器可以自动导航，自动开启和停止，因此我只要四处看看，保证机器运转正常就行了。”
"It steers itself, shuts itself on and off, so I basically just turn around and make sure everything's running right, " Brad says.
布拉德说：“这台机器可以自动导航，自动开启和停止，因此我只要四处看看，保证机器运转正常就行了。”
"It steers itself, shuts itself on and off, so I basically just turn around and make sure everything's running right, " Brad says.
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