This behaviour is commonly observed among several species of finch.
种行为常常可
在几种雀科鸣禽中看到。
词This behaviour is commonly observed among several species of finch.
种行为常常可在几种雀科鸣禽中看到。
We saw a finch light on (or upon ) a bough.
我们看到树枝
停着（或 upon ) 一只麻雀。
声
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