“natural bridge”的概念、定义、翻译、参考文献-科学参考

单词	natural bridge
释义	natural bridge [`nach·rǝl `brij] ^GEOLOGY An archlike rock formation spanning a ravine or valley and formed by erosion. Also known as natural arch.
随便看	middle-third rule middle tones Middle Triassic middle-ultraviolet lamp middling middlings mid-extreme tide midfan mid-frequency gain midge midget midget impinger midgut midicomputer mid-latitude mid-latitude westerlies midline midnight sun mid-ocean canyon mid-oceanic ridge mid-ocean ridge mid-ocean rift mid-ocean rise midpoint mid-range materiel requirements

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