单词	downfold
释义	downfold /ˈdaʊnfəʊld / noun Geology A syncline.His concept of a great downfold or depression filling with sediment at the edge of a continent and then isostatically uplifted to produce the Appalachian fold ranges, was the first suggestion of an Appalachian geosyncline.... Beyond the almost level floor of this downfold, the chalk strata rise once more in a line of very sharp flexure, running west and east through South Dorset into the Isle of Purbeck, and through the Isle of Wight.
随便看	locust beetle locust berry locust bird locust borer locust bush locust club locust flower locustian locustid locust-killer locust lobster locust post locust shrimp locust tree locust wood locust years locution locutionary locutor locutorium locutory lode loden lodestar lodestone

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