“波动的”造句

在许多应用场合,波动的直流电是讨厌的.
In many applications a fluctuating DC current is undesirable.

他是个情绪波动的演员(演得好坏由心情而定).
He's avery temperamental player, ie plays well or badly accordingto his mood.

他们波动的回声中带有一种难言的悲哀.
In their echoes, there was a tone of unutterable sorrow.

• #波动的