Somatocoel
n. [动]原始体腔(指棘皮动物胚胎时期的体腔)
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
Would he have seen you if you hadn't waved to him?
如果你没向他招手他会看见你吗？
Please say hello to your mother for me.
请代我向你母亲问好。