She said the scar had not healed and there was a "gaping hole", and the implant site was infected.
And, if a robot arm were to swing out towards you, for safety reasons you would want to be able to immediately stop it and push it back without harming yourself, reverse that motion instantly. For one thing, that requires a back-driveable actuator.
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習近平將反腐列為其執政的核心支柱之一，稱其是共產黨面臨的最大威脅，並表示這場戰鬥「形勢依然嚴峻複雜」。