Bipitch
双螺旋的, 双螺线的, 双节距的, 双头的
🗣️ 情景例句
What room are you in, sir?
先生，您住几号房？
That's a misunderstanding .
那是个误会。
The further off this solid obstruction, the longer time will elapse for the return of the echo.
固体障碍物越远。回声返回所用时间就越长。