wavelength
noun [ C ] uk/ˈweɪv.leŋθ/ us/ˈweɪv.leŋθ/
波长;（广播电台占用的）频道，波段
the distance between two waves of energy, or the length of the radio wave used by a particular radio station for broadcasting programmes
Because of their long wavelengths, mega-tsunamis are extremely destructive when they hit a coastline. 因为其很长的波长，超级海啸袭击海岸线时具有极度的破坏性。
The station is broadcast on the FM wavelength. 该电台用调频广播。
infrared/ultraviolet/optical/electromagnetic wavelengths 红外线／紫外线／光／电磁波长
Idiom
be on the same wavelengthidiom C2 （两人或多人）观点相投，合得来
(of two or more people) to think in a similar way and to understand each other well
What makes the problem worse is that Howard and Tina are not on the same wavelength about how to deal with it. 让问题变得更糟糕的是霍华德跟天娜在如何解决问题方面意见不合。