Hemocelom
[医] 围心腔(胚胎), 血腔(昆虫)
🗣️ 情景例句
Don't worry about it. It's nothing.
别担心，没事儿。
Open confession is good for the soul.
坦白交代，身心愉快。
Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
寻找行星证明相当困难，但是要在行星上发现生命会变得无比艰难。