Praetrsonics
极超短波晶体声学, 特超声(学)
🗣️ 情景例句
Charley Rafer.
Charley Rafer。
Gentlemen! Can't you agree on anything?
先生们，可否赞成一项？
Bonny, take the next dirt track on the left. That will take us down into the valley.
波尼，沿着左边的下一个土路走。我们将沿路而下进入河谷。