单词	在第二層上
释义	同FLOOR
随便看	outer recirculation outer region outer regular set outer respiration outer reticular layer outer reticular (plexiform or molecular) layer outer ridge outer rind of the bamboo outer ring outer rise outer rod outer room outer root sheath outer root-sheath outer rotor outer route outer route--exterior channel outers outer scale outer scale liquid-in-glass thermometer outer seal outer segment outer seven outer shadow outer shaft