Diphthongia
n. [医]复音,双音
🗣️ 情景例句
You know I'm very excited about his arrival.
知道我对他的到来是多么兴奋。
Does the back door have a lock on it?
后门上有锁吗？
We'll be calling you again next month.
下个月我们会再打电话给你。