如果岩石是渗水的——岩石中有许多小孔，比如沙石——水将渗透过这些小孔，直到由不渗透水的岩石构成的那个层面。
If the rock is porous — has many small holes in it, like sandstone — water will sink through these holes until it reaches a layer of rock that is not porous.
对。漓江的水犹如水晶一样，晶莹清澈，不管水有多深，都清澈见底，能清楚地看到江底的沙石与杂草。
You're right. The Li River is crystal clear, and no matter how deep the water is you can see the bottom-the pebbles, sand and weeds clearly.
我们抖擞精神，一气走过壶天阁，登上黄岘岭，发现沙石全是赤黄颜色，明白中溪的水为什么黄了。
Putting on a spurt we soon reached the Heavenly Tea-pot Tower and Mount of the Yellow Escarpment, whose orange sandstone accounts for the amber colour of the water below.
漓江的水犹如水晶一样，晶莹清澈，不管水有多深，都清澈见底，能清楚地看到江底的沙石与杂草。
The Li River is crystal clear, and no matter how deep the water is you can see the bottom—the pebbles, sand and weeds clearly.
混凝土是用水泥、沙石和水制成的。
混凝土是用水泥、沙石和水制成的。
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