Somatocoel
n. [动]原始体腔(指棘皮动物胚胎时期的体腔)
🗣️ 情景例句
Oh. Now all it has to do is stop raining.
噢。现在唯一希望的就是停止下雨。
A fool and his money are soon parted.
笨蛋难聚财。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。