...Call constantly chirrup as they fly... 
Frank M. Chapman 「Color Key to North American Birds」
...We have not seen a bird, nor heard the chirrup of any to disturbthe gloomy silence of the dark and dismal forest—thus plainly indicatingthe absence of water in and about this country...
John McDouall Stuart 「Explorations in Australia, The Journals of John McDouall Stuart」
ランダム例文：
pharisee papilla disparagingly
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