acritarch
/ak-ri-tahrk/US // ˈæk rɪˌtɑrk //
尖锐湿疣,尖锐化,尖锐性,尖锐湿疣的危害
Definitions
n.名词 noun
- 1
Paleontology.
- : any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition.
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