她在中学时开始吹长笛。

She started playing the ___flute in middle school.

我喜欢这首乐曲中长笛优美的声音。

I love the beautiful sound of the ___flute in this piece of music.

他是该市青年管弦乐团的首席长笛手。

He is the first ___flute in the city's youth orchestra.