Otosteon
[医] 耳石, 听小骨
🗣️ 情景例句
we'll send you a letter of appointment and can sign a full distributor contract.
我们将给你们送上一份聘书，并签订一份总的销售合同。
What's this?
这是什么？
What kind of music does he sing?
他演唱哪种音乐？