音乐家们经常使用节拍器来保持节奏稳定。

Musicians often use a ___metronome to keep a steady beat.

初学者使用节拍器可以帮助保持稳定的节奏。

Beginners can use a ___metronome to help maintain a steady tempo.

她的心跳像节拍器一样稳定。

Her heartbeat was as steady as a ___metronome.