Usfs
[医]United States Frequency Standard
🗣️ 情景例句
I'm retired.
我退休了。
Unless there is a sudden change of political situation, it is not accepted to execute the contract only partially.
除非有什么突然的政局变化，否则执行部分合同不能被接受。
The Greenwood Boys will be staying for five days.
“绿林少年”准备在此逗留5天。