Thymitis
[医] 胸腺炎
🗣️ 情景例句
We can write letters. It's cheaper than calling.
我们可以写信就好，那比打电话便宜。
How long will it take for a letter to get to California?
你把信寄到加州要多长时间？
They have to work hard to support their family.
他们必须努力工作来支持他们的家。