Blastulation
囊胚形成
🗣️ 情景例句
Are you carrying any items that need to be declared?
你没有携带需要申报的东西吗？
What's the point of feeling blue?
有什么好悲伤的？
some drifting and slow, others jerky and rapid.
这些活动有的飘忽而缓慢，有的急剧而快速。