Fluorinator
氟化器
🗣️ 情景例句
Hello, Mr. Carlson.
哈喽， Carlson先生。
Marriage is a lottery.
婚姻是一件难于预料的事。
and at the most critical juncture we took turns in watching that point.
在最紧急的时刻，我们轮流监视那段河流的险情。