When I played with a symphony orchestra, our union reached an agreement with a major airline about which instruments we could carry on board, and which had to be shipped as luggage.

• 我在一个交响乐团演奏时，我们乐团与一家大航空公司达成协议：哪些乐器可以带上飞机，哪些乐器得作为行李托运。