acritarch / ˈæk rɪˌtɑrk /

🎓大学词汇尖锐湿疣尖锐化尖锐性尖锐湿疣的危害

acritarch 的定义

n. 名词 noun

Paleontology.

  1. any of various microfossils, of unknown biological affinities, having a central cavity enclosed by a wall of chiefly organic composition.