重奏

The violinist walked on the stage and the duo became a trio.

那位小提琴家走上台, 二变成组。

When we get to duos it becomes hellishly complicated.

对二来说，这就更是复杂得恐怖。

The quartette was not half bad, either.

那个四唱[四](节目)也很不错。

This concert also included the first performance of his Septet, op. 20, which became very popular.

音乐会上还首次演他的七，作品第20号，后来很受欢迎。

The new and cool Logitech Squeezebox Duet network music system is expected to be available in the US and Europe by this month for around $400.

新的和冷静的罗技squeezebox二网络音乐系统，预计可在美国和欧，月份为400美元左右。