单词	substructure
释义	sub·struc·ture (sŭbstrŭk′chər) n. 1. The supporting part of a structure; the foundation. 2. The earth bank or bed supporting railroad tracks. sub·structur·al adj.
随便看	national monument national park national seashore National Socialism nationhood nationless Nation of Islam nation-state nationwide native Native Alaskan Native American native-born Native Hawaiian natively nativeness nativism nativist nativistic nativity Nat "King" natl. NATO natriuresis natriuretic

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