Smith's reaction
[医] 史密斯氏反应, 过敏性
🧩 词语组成解析
🗣️ 情景例句
Hello.
你好。
No, I only wrote her one letter this year.
是的，今年我才给她写过一封信。
The house was dirty. They hadn't cleaned it for weeks.
房子很脏，他们好几个星期没打扫了。