Blastocone
胚锥, 卵裂锥
🗣️ 情景例句
He's always in and out of jobs.
他老是跳槽。
She was flattered at the invitation.
她受到邀请，不胜荣幸。
and no father is confronted with his inability to 'buy'an education for his child.
也不存在父亲无力为孩子支付教育费用而犯难的问题。