Alveolar cavity
[醫] 牙槽
?? 詞語組成解析
a. 牙槽的, 肺泡的\\nn. 齒槽音
??? 情景例句
Which part of the paper do you read first?
你會先看報紙的哪一部分？
What time does the first train to Boston leave?
第一班去波士頓的列車什么時間開出呢？
None of us is afraid of difficulties.
我們當中沒有一個人害怕困難。