Prf
n. pulse-repetition frequency的简 写
🗣️ 情景例句
Never in my life have I seen such a mess!
我这辈子没见过这么乱的地方。
What time is it now?
现在几点？
But the station master was adamant: rules could not be broken and she had to watch that train disappear towards her destination while she was left behind.
但站长态度坚决，规章制度不能破坏，姑娘只得眼看那趟火车消逝在她要去的方向而撇下了她。