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Cambrian evolutionary fauna
释义
Cambrian evolutionary fauna
Encyclopedia
理学
古生物学
释
Cambrian evolutionary fauna
寒武纪演化动物群
寒武纪时全球海洋动物群的总称。研究地球生命系统中动物起源与早期演化的关键。
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undulatory theory
undulatory theory, wave theory
unduloid
undulose extinction/undulatory extinction
undyed silk
UNEA
unearned premium reserves
unearthed
Uneasy Virtue
UNECA
unemployment
unemployment benefit
unemployment insurance
Unemployment Insurance Act of 1940
unemployment insurance fund
unemployment insurance fund budget
unemployment insurance payment expiration
unemployment insurance reemployment service
unemployment insurance treatment
unemployment rate
unemployment ratio
Unemployment Relief Camps
unending decimal
unenriched uranium
unenumerated fundamental rights
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