单词	prototroch
释义	prototroch noun pro·​to·​troch ˈprōtə‧ˌträk plural -s : the ciliated band or ring characteristic of trochophore larvae prototrochal prōtä‧trəkəl adjective Word History Etymology prot- + -troch
随便看	pillular pillule pillwillet pillworm pillwort pillworts pilm pilo- Pilobolus pilocarpine pilocarpines pilocystic piloerection pilomotion pilon piloncillo pilonidal pilori pilori rat Pilosa pilose pilosellae pilosellas piloser pilosest

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