Pretersonics
[电] 高于500百万赫频率的声纳波
🗣️ 情景例句
Time for a feeding and time for a diapering.
该喂奶， 换尿布的时候了。
If he doesn't accompany him, I will.
如果他不，我将陪伴他。
We're going to pick apples.
我们打算去摘苹果。