轻敲

Charlotte rapped on the window with her knuckles.

夏洛特用指节敲着窗户。

Think of the transfixingly strange Scherzo of the Fifth Symphony, when the music effectively stops moving and the timpanist drums lightly on the note C like a finger tapping on a pane.

想想第五交响曲的谐谑曲中奇怪终的地方，当乐突然停，鼓手的敲C，像用手指敲方格一样。