Apical periodontitis
[医] 根尖牙周炎
🧩 词语组成解析
a. 顶端的\\n[医] 尖的, 尖端的
[医] 牙周炎
🗣️ 情景例句
There is a lot of unsavory material available on the internet.
网络上有很多不健康的信息。
It's really a bargain.
租金很便宜。
Walt invented the steam engine.
瓦特发明了蒸汽机。