Ultraacoustics
超声学
🗣️ 情景例句
I guess I ruined your day.
我想我扫了你今天的兴。
I wish I were running across an open field.
我真希望在原野奔跑。
If you want to send a letter to an office abroad that is in a different time zone, you can send a fax, and it will be received even though the office is not open.
如果你要寄信到不同时区的国外办公室，你可以发个传真，即使办公室不开门，信也会被收到。