On the other hand, gravel ground condition is a good bearing stratum for piles, which is often met with in civil construction.
另外，卵石地层是土木工程建设经常遇到的地质条件，是桩基良好的持力层。
The ground was brown with clumps of yellowing grass and grey gravel.
土地被丛丛黄草和灰色的碎石染成了褐色。
We hiked a bit further until we came to a section where the vegetation ended and the ground was covered in small pebbles of weightless lava gravel.
我们走得更远一点，直到我们到达一个完全被小块岩石覆盖的地区。
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