【化】 inner shell
inner; inside; within
【医】 end-; endo-; ento-; in-; intra-
carapace; hull; rind; shell; shuck
【化】 cover
【医】 crust; crusta; crustae; putamen; shell; testa
layer; region; stage; story; stratum; tier
【计】 layer
【医】 coat; lamella; lamellae; lamina; laminae; layer; strata; stratum