单词	protoconch
释义	protoconch noun pro·​to·​conch ˈprōtə+ˌ- 1 : the embryonic shell of a mollusk (as a univalve) 2 : the apical chamber or whorl of an ammonite or gastropod protoconchal ¦⸗⸗+ adjective Word History Etymology International Scientific Vocabulary prot- + conch
随便看	double-dippers double-dipping double-dips double-disc double-disc harrow double-distilled double-dog dare double-dome double-domes double-double double-dyed double-eagle double-edged double-edged sword BCE bcf BCG vaccine BCh BChE BCL BCN bcs BCS BCS theory bd

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。