其他古代文明当然也了解风筝的用途；早在公元前1250年，中国人就用它们传递信息，向敌人投掷燃烧的碎片。
Other ancient civilisations certainly knew about kites; as early as 1250 BC, the Chinese were using them to deliver messages and dump flaming debris on their foes.
在历史上，风筝的用途曾有过多次转换。
早期的风筝有特定的用途。
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