Bubblemeter
气泡检查仪
🗣️ 情景例句
but now what?
但下一步怎么办？
The little car has lots of room.
这小汽车有许多空间。
A sound made by tapping on the hull of a ship will be reflected from the sea bottom,
敲打船体所发了的声音会从海底传回来，