Uf
abbr. 脲甲醛树脂；超声频率（Ultrasonic Frequency）
🗣️ 情景例句
Things have worked out badly.
情况进展得很不理想。
I can do.
我会做。
Annie was born in a poor family, on April 4th, 1866.
1866年4月4日，安妮出生在一个贫苦家庭中。