世界上有三种声音,耳朵听了会感到舒服、放松,它们分别是:流水声、风声和鸟鸣声。鸟的叫声,也不总是悦耳婉转,有些鸟儿的啼叫就十分凄厉,比如布谷鸟、大拟啄木鸟。平时歌声美妙的鸟儿,在遇到紧急状况时,也会发出愤怒、焦急、沮丧的声音,这个时候,你用耳朵仔细聆听,便能感受到它们的情绪。除了叫声,鸟儿最吸人注意的是它漂亮的外形,也往往因为这一身漂亮的羽毛,很多鸟儿遭受到了捕杀。 There are three kinds of sounds in the world. When you hear the ear, you feel comfortable and relaxed. They are: running water, wind and birdsong. The sounds of birds are not always melodious, and some birds cry very clumsily, such as Cuckoo, Great Woodpecker. When you are in an emergency, you can also get angry, anxious and frustrated voices. At this moment, you can feel their emotions when you listen closely with your ear. In addition to crying, the bird is most noticeable is its beautiful appearance, but also often because of this one pretty feathers, many birds have been killed.