不能自己制造火焰，最早的人们存储火可能通过保持缓慢燃烧点着的原木火石或是装在罐子里的木炭。
Unable to make flame for themselves, the earliest peoples probably stored fire by keeping slow burning logs alight or by carrying charcoal in pots.
早期的人类可能通过让燃烧缓慢的原木保持燃烧状态来保存火种。
The earliest people probably stored fire by keeping slow burning logs alight.
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