Wavecanal
波道
🗣️ 情景例句
And take measures to reinforce them. Please set your mind at rest.
并采取措施加固。请放心好了。
It won't take much time.
不会花很多时间的。
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。