extraembryonic circulation胚: embryo外: outside; external side循环: circulate; circle; round; re ...外循环: external recycle; output loop; outside loop非体外循环: off pump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:胚外循环，即可在微信中查询翻译
