primitive mouth胚孔: blastopore; protostoma; arch ...原: primary; original; former口: mouth孔原: kong yuan原口: blastopore; haraguchi; primary mouth; protostoma; protostome下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:胚孔原口，即可在微信中查询翻译
