小鸟落在树枝的栖息处休息。
The bird rested on its ___perch on the tree branch.
这只鸟停栖在绿叶之上。
The bird is ___perched on green leaves.
这块地长约两杆，宽约一杆。
The field is about two ___perches long and one ___perch wide.
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