Prf
n. pulse-repetition frequency的简 写
🗣️ 情景例句
She's very pretty.
她很漂亮。
I want to fly to Chicago on Thursday, the 1st.
我要在1号，星期四飞往芝加哥。
There were hardly any trees on the island and there was no water, but this did not prove to be a problem.
岛上几乎没有一颗树，也没有淡水，但这不算什么问题。