| 摘要 |
An electric power generation system is disclosed. The electric power generation system includes: a string; a bobbin configured to rotate when the string is unwound from the bobbin as the string is pulled; and an electric power generator having a rotor wherein the rotor is mechanically coupled to the bobbin. The string is anchored at one end to a case and passes around a rotating wheel. The rotating wheel is configured to be pulled.
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