单词	ring a bird
释义	ring a bird 在鸟腿上扣环,然后放走供科学研究用
随便看	single-frequency signalling single frequency simplex single-frequency simplex single-frequency sine-wave response single-frequency sound single frequency tone single-frequency translation single-frequency two phase rectification single-frequency ultrasound single-frequency vibration single freuqency signalling unit single friction surface clutch single-friction-surface clutch single frieze balustrade Single front of dash passthrough single front wheel tractor single front wheel type single fruited Single fruit packaging Single fruit weight single fuel single fuel firing Single Fuel Injection Pump single fuel natural gas engine single fuel system