concertina method of tariff reduction

例句：

1. 1.The concerto is a beautiful piece of music that requires precision and coordination.
   这部协奏曲是一首美妙的音乐作品，需要精确和协调。
2. 2. The pizzicato was played with great skill by the young violinist.
   那位年轻的小提琴家演奏的颤音技巧非常高超。
3. 3. The oboe is a woodwind instrument that produces a warm, sweet sound.
   长笛是一种木管乐器，能产生温暖而甜美的声音。