"Another problem with today's robots is they rapidly run out of batteries," adds Jenny Read, programme director in robot dexterity at Aria, a technology funding agency. "Electric motors are terrible at that."
当然，刘强东面临的挑战同样艰巨。高端游艇高度依赖品牌信誉与长期交付能力，单船建造周期长、资金占用大，远非互联网式的快速扩张可以解决。更何况，国内市场规模仍然有限，私人游艇文化尚在培育阶段。
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（三）扬言实施放火、爆炸、投放危险物质等危害公共安全犯罪行为扰乱公共秩序的。
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"These types of surgeries are too risky, yet it's still so accessible," she said.