SYDNEY: An ancient river system buried 35 metres below the sand dunes Simpson Desert in Central Australia has been revealed by a team of Australian and American researchers.

悉尼：一个美国和澳大利亚的联合研究小组，在澳大利亚辛普森沙漠的沙丘下35米，发现了一条古老的河道网。

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Currently most of its terrain is made up of desert plains and sand dunes with some savanna around the Niger river.

该国的主要地形是沙漠平原和沙丘，还有环绕尼日尔河的一个大草原。

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People bury a partially paralyzed boy in the sand along the banks of the Indus River in Pakistan during the Tuesday solar eclipse.

周二日食期间，人们将一个偏瘫的男孩埋在巴基斯坦印地安座河河岸的沙滩上。

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The cassiterite makes up some fraction of the standard sand and river silt there.

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Sand bar: accretionary deposit of sand formed across a river mouth or bay by wave action and joined to the shore at both ends.

UNESCO: L O S S A R Y

Flood-tide delta: accretionary deposit of sand found on the bay or river side of an inlet and usually formed by tidal currents.

UNESCO: L O S S A R Y