He hangs these boxes up in trees and takes them down every week to see if the birds are nesting in them.
他把这些箱子挂在树上，然后每周取下来，看看鸟儿是否在里面筑巢。
Not long ago, he found that the bluebirds were nesting in the dead trees which were often cut down, so he began to make bluebird boxes for the birds in order to save them.
不久前，他发现蓝知更鸟在枯树上筑巢，而这些枯树往往会被人们砍去，于是他开始为这些鸟制作蓝知更鸟箱，以拯救它们。
Climbing up and down to our arboreal camera platform, and then into the nesting tree itself, incurred the mother's wrath.
我们爬上去再回到安置在树上的摄像机平台，然后撞到了树，惹怒了母鹰。
The GroupManager script library includes functionality to deal with hierarchies of groups (groups that contain other groups as members), down to six levels of nesting.
groupmanager脚本库包含处理组(包含其他组作为成员的组)的层次结构，向下可以包含6层嵌套。
The GroupManager script library includes functionality to deal with hierarchies of groups (groups that contain other groups as members), down to six levels of nesting.
groupmanager脚本库包含处理组(包含其他组作为成员的组)的层次结构，向下可以包含6层嵌套。
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