Somatocoel
n. [动]原始体腔(指棘皮动物胚胎时期的体腔)
🗣️ 情景例句
He's so little ... so new.
他这么小……这么幼……
I'll be ready within five minutes.
我五分钟内就可以准备好了。
Who but Jack would do such a thing?
除了杰克谁会做这种事呢？