词汇	氮气层
释义	氮气层医blanket of nitrogen
随便看	human f?ces human feature Human Features human feces human fecundity human feeling human feeling and thoughts human feeling or sensitivity human feelings human feelings/human sympathy human feet human female nipple human femoral artery human ferrochelatase gene human fertility human fetal bone marrow Human fetal bone morrow human fetal brain human fetal cord serum human fetal diploid kidney human fetal diploid kidney cell human fetal diploid kidneycells human fetal diploid kidney cells human fetal diploid lung human fetal diploid lungcells