2. The voice of nature
3, tactfully.
4. It sounds good
5, orioles out of the valley
1, lingering sound: describe a sweet song or music that people can't forget at once.
2. Voice of nature: Compared with the earth and people, nature is the highest realm of music. Describe the voice is very beautiful.
3, euphemism: very nice, intoxicating.
4, nice: the voice is very nice, listening is very comfortable.
5. The oriole comes out of the valley: the beautiful voice of women.