twins双: two; twin; both; dual胎儿: fetus; foetus; embryo单卵双胎儿: monovular twins， identical twins， monozygotic twins双卵双胎儿: binovular twins， dizygotic twins; dizygotic twins双胎胎儿交锁: locking of heads of twins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:双胎儿，即可在微信中查询翻译
