Praetrsonics
极超短波晶体声学, 特超声(学)
🗣️ 情景例句
when it's very cold out.
冬天外面很冷的时候。
A horse is neither better nor worse for his trappings.
相马不可凭马的装饰。
But I don't understand. You returned the necklace to me the next afternoon. I remember very well.
不过，我还不懂。我记得很清楚，你们第二天下午就把项链还给我了。