她优雅地握着指挥棒指挥乐队。

She held the baton gracefully as she led the band.

这位女指挥开始指挥乐队演奏.

The conductress took the podium.

指挥使大家协同演奏，指挥乐队什么时候轻柔、什么时候响亮、什么时侯开始、什么时候停止。

The conductor makes sure that everybody plays together, and shows the orchestra when to play quietly or loudly and when the musicians should stop and start playing.