deltas
n.
希腊字母表中第四个字母( delta的名词复数 );
（河口的）三角洲;
例句:
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It would inundate large parts of the rice-growing river deltas.
来自VOA
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Tidal channels, deltas, and washover fans are characteristically associated with offshore bars.
潮汐水道 、 三角洲和冲刷扇典型地与滨外砂洲伴生在一起.
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I know many of the early civilizations prospered on deltas.
我知道很多古老的文明都是在三角洲上蓬勃发展起来的.
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Many deltas are triangular in shape.
很多三角洲是三角形的.
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For this is the source of oil in rivers and deltas.
来自SA
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Deltas worldwide are in trouble because human development is causing the land to sink.
来自SA