1、 The provenance of Southern shelf and slope should include the Mekong River and Kalimantan Islands.
南部陆架-陆坡区的物源主要有湄公河和加里曼丹岛,但两者的混合明显.
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2、 Many explorers' quests to find the source of the Mekong River were unsuccessful.
许多探险家想探寻湄公河的源头，但都没有成功。
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