Shf
n. super-high frequency的简写
🗣️ 情景例句
Here.
这里 。
Come to me if you're in any difficulty.
有困难来找我。
Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。