Acaulium
[医] 无茎真菌属
🗣️ 情景例句
To teach a fish how to swim.
孔子面前读诗书，班门弄斧。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
OK! Is it straight?
好的！立直了吗？