Uf
abbr. 脲甲醛树脂；超声频率（Ultrasonic Frequency）
🗣️ 情景例句
Why are you leaving your present job?
你为什么要放弃目前的工作？
Wasn't the issue settled?
问题不是解决了吗？
Some people on the bank called out to the man in the boat, but he did not hear them.
岸上的一些人对着小船上的人高喊，但他没有听见。