Nowadays, we play violins, cellos, flutes, trumpets and other instruments in an orchestra. 现在，我们在交响乐队里弹奏小提琴、大提琴，吹长笛、小号等乐器。

　　How about our ancestors? Did they play the same instruments? 那我们的祖先呢？他们弹奏的乐器和我们一样吗？

　　No, they played different instruments. 不，他们弹奏不同的乐器。

　　A crumhorn is one of the oldest instruments. 双簧管是一种最古老的乐器。

　　About 600 years ago, people began to have an interest in art and music. 大约600多年前，人们开始对艺术和音乐产生了兴趣。

　　They developed various musical instruments and crumhorns were one of them. 他们发明了多种乐器，双簧管就是其中的一种。

　　A crumhorn is a curved wooden pipe, you have to blow it to make a sound. 双簧管是弯曲的木管，你吹它就能发声。

　　The different sizes of crumhorns make different sounds. 双簧管的大小不同，发出的声音也不一样。