shield-fern

英['ʃiːldf'ɜːn] 美['ʃiːldf'ɜːn]
  • n.鳞毛蕨;三叉蕨
  • factor n.因素;因数;因子vt.把...因素包括进去vi.作为因素
  • shield n.盾;盾状物;防卫物vt.保护;庇护
名词 shield fern:
  1. any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori