这条溪流的河床主要由坚硬的石灰华构成,使其表面显得光滑。

The riverbed is mainly composed of hard tufa, which gives it a smooth appearance.

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The riverbed is mainly composed of hard tufa, which gives it a smooth appearance.

tufa 是名词,指"石灰华",一种由碳酸钙沉积形成的多孔岩石,常见于泉水或溪流中。这个词来自意大利语,指多孔的火山岩或沉积岩。

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