Peromedusan
囊水母
🗣️ 情景例句
What are you working on?
你在干什么？
He is studying the ecology of ameba.
他在研究阿米巴
With a stopwatch, they counted how many times the bees repeated the dance during one minute.
他们用秒表记录蜜蜂在一分钟内重复舞蹈的次数。