“胚胎期”例句

单词 胚胎期 例句 DEFINITIVE EXAMPLES 权威例句〔morula〕The spherical embryonic mass of blastomeres formed before the blastula and resulting from cleavage of the fertilized ovum.桑椹胚：形成于囊胚之前且处于胚胎期内的球形裂球群，由受精卵细胞的分裂而成美国传...