名词鸟叫声，学鸟叫; 鸟笛

1. 鸟叫声：birdcage 鸟笼 | birdcall 鸟叫声 | birder 猎鸟者

2. 单边带长途通讯设备：bird-track 鸟迹 | birdcall 单边带长途通讯设备 | birdfoot subdelta 鸟足状小三角洲

3. 叫子：birdcall 学鸟叫 | birdcall 叫子 | birdcalltweedle 鸟叫声

4. 学鸟叫：学年之半的midyear | 学鸟叫birdcall | 学期termsemestertrimester

noun

1. a device for imitating a birdcall

2. the characteristic sound produced by a bird

e.g. a bird will not learn its song unless it hears it at an early age

Synonym: callbirdsongsong