1·We had the best choir in the area and there were also several rock strata visible on the walls which made teaching geology far more interesting.
洞壁上可以看到好几种岩层，用这个教地理生动有趣。 而且我们不需要生物课本，我们的山洞学校里每天都能看到蝙蝠、蜥蜴。
2·And adjustment in rock strata means that loose soil will sink or heave.
岩层的调整意味着松动了的泥土将会下沉或者鼓起。
3·Now the man who bought the claim hired an engineer to examine the rock strata of the mine.
现在有人重新买下这一矿脉所有权，他雇佣了一名工程师来探测矿石的岩层结构。
4·The practice proved that transient electromagnetic exploration has good effect in exploring bedrock and differentiating rock strata.
实践证明：瞬变电磁勘探在勘探基岩及划分岩层方面效果较好。
5·In view of random movement and deformation of rock strata, also considering the interaction of ground-foundation-building, a building in mining area is analyzed by using this method.
并利用该方法，针对岩层随机移动变形作用，考虑地基基础上部结构的共同作用，对矿区建筑物进行分析。