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历史：
ob·vi·ous
\\ˈäb-vē-əs\\ adjective
 ETYMOLOGY  Latin obvius, from obviam in the way, from ob in the way of + viam, accusative of via way — more at ob-, via
 DATE  1603
1. archaic : being in the way or in front
2. easily discovered, seen, or understood
Synonyms: see evident
• ob·vi·ous·ness noun

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