| 单词 | rock strata |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔basin〕A broad tract of land in which the rock strata are tilted toward a common center.盆地：岩层向共同的中心倾斜的广大陆地区域美国传统〔slip〕A smooth crack at which rock strata have moved on each other.平滑裂隙：一种平滑的裂缝，岩层沿其错开美国传统〔stratigraphy〕The study of rock strata, especially the distribution, deposition, and age of sedimentary rocks.地层学：研究岩石的分层、尤其是沉积岩的分布、沉积与年代的学科美国传统〔stratum〕Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.岩层中有证据表明，该地区在 15,000 年前曾经非常干旱。柯林斯高阶 |
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