Freemium
n. 免费增值
🗣️ 情景例句
Radio says sunny and mild.
广播说是晴天 温暖适中。
The love of money and the love of learning rarely meet.
爱财与好学，实难相共容。
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。