Pericementoclasia
[医] 牙周膜溃坏
🗣️ 情景例句
How are you?
你好吗？
Would you please call a taxi for me?
可以请你帮我叫一辆出租车吗？
He noticed at once that discipline was slack: the Danes had the self-confidence of conquerors, and their security precautions were casual.
他马上发现丹麦军纪律松弛，他们以征服者自居，安全措施马马虎虎。