4周搞定2000+托福核心词
sedentary = sed(坐) + ent(…的) + ary(…的) = 坐着的，固定不动的
sedment = sed(坐) + ment(表名词) = 坐下来的物质→沉淀物
acment = ac(加强) + ment(表名词) = 伴随物
accompliishment = ac(一再) + com(全部) + pli(满) + ish(表动词) + ment(表名词) = 全部满足→完成
complementary = com(共同) + ple(满) + ment(表名词) + ary(…的) = 一起加满的→补足的，互补的
contemporary = con(共同) + tempor(时间) + ary(…的) = 同时间的→当代的
坐到底下的→沉积的，沉淀的
sedimentary
常考释义
Stromatolites look like wavy layers of sedimentary rock, but they are really fossils, fossils of the waste from microbial masts.
叠层石看起来像是一层层的沉积岩，但它们其实是化石，是微生物的一层层的残渣。
来源于：听力OFFICIAL39 L1adj. 沉积的；沉积而成的【地质】
Loose sediments may be changed into solid sedimentary rocks.
松散的沉积物可以变成坚硬的沉积岩.
Stromatolites look like wavy layers of sedimentary rock, but they are really fossils, fossils of the waste from microbial masts.
叠层石看起来像是一层层的沉积岩，但它们其实是化石，是微生物的一层层的残渣。
来源于：听力OFFICIAL39 L2On Earth, liquid water removes carbon dioxide from the atmosphere and combines it with calcium, from rock weathering, to form carbonate sedimentary rocks.
在地球上，液态水从大气中带走二氧化碳，并使之与钙结合，从岩石风化，到形成碳酸盐沉积岩（都是二氧化碳与钙结合的实例）。
来源于：阅读OFFICIAL51 P2Similar applications of this concept were to be used again and again in later centuries to estimate the ages of rock formations and, in particular, of layers of sediment that had compacted and cemented to form sedimentary rocks.
[[span id="insert_D" class='strong-insert']][[/span]]在以后的几个世纪里，这个概念被多次应用于计算岩石形成的年龄，尤其是在形成沉积岩层时一层层压紧的各种沉积层的年龄。
来源于：阅读OFFICIAL35 P1These rocks are then uplifted sometime in the future to form new mountain ranges, which exhibit the sedimentary layers (and the remains of life within those layers) of the earlier episodes of erosion and deposition.
随着时间的流逝，这些沉积层变成了沉积岩。
来源于：阅读OFFICIAL35 P1adj. 沉淀物特有的；沉淀物似的；含沉淀物的
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