Blastocoelic
[医]囊胚腔的
🗣️ 情景例句
and they found it to be too easy--
他们发现字太简单了，
Fortune knocks once at least at every man's door.
人人都有鸿运高照之日。
and whom I respect, confess at once that they have little idea where they are going when they first set pen to paper.
和尊敬的作家，都立即承认在他们动笔时，不清楚要写什么，怎么写。