Prfs
abbr. pulse repetition frequency stagger 脉冲重复频率跳动
🗣️ 情景例句
We need to bring a flashlight.
我们需要带一个手电筒。
It is easy to open a shop but hard to keep it always open.
开设店铺易，维持常开难。
Dan wondered why he was wanted by the police, but he went to the station yesterday and now he is not worried anymore.
丹奇怪警察为什么找他，但昨天还是去了，结果他一再担心了。