名词
中文翻译：巢针
同义词：
['nesting pin', 'nesting needle']
例句：
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1.She used a nest pin to secure the bird's eggs in the nest.
她用一个巢针将鸟蛋固定在巢里。
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2. The bird was able to use its beak to peck at the nest pin and remove it.
这只鸟能够用它的喙啄开巢针并把它取出来。
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3. The nest pin was a useful tool for the bird to protect its eggs from predators.
巢针是这只鸟用来保护蛋免受捕食者侵害的一种有用的工具。