Malacophyllus umbilicus
[医] 瓦衣, 石莲花
🧩 词语组成解析
n. 脐, 中心\\n[医] 脐
🗣️ 情景例句
There's another advanced class today at four o'clock.
今天下午四点钟还有一次高级班。
Do we have to wear the helmets?
我们得戴上防护帽吗？
but it was not until 1869,
但直到1869年，