they cover around 300 square km and were first happened upon by robert

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theycoveraround300squarekmandwerefirsthappeneduponbyroberttheycoveraround300squarekmandwerefirsthapp

they cover around 300 square km and were first happened upon by robert
they cover around 300 square km and were first happened upon by robert

they cover around 300 square km and were first happened upon by robert
它们涵盖300平方公里,是第一次发生后,由罗伯特史葛