not really. the energy comes from elec he wore on waist

来源: internuts 于 2025-10-01 15:45:12 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (1387 bytes)
本帖于 2025-10-01 15:56:45 时间, 由普通用户 internuts 编辑
回答: 任何机械不能省功 由 又当爹来又当妈 于 2025-10-01 15:33:41

The law of conservation of energy states that energy cannot be created or destroyed.

It can be converted from one form to another.

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