介词短语
中文翻译：在壳里
同义词：
['in the case', 'in the casing', 'within the shell']
例句：
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1. The bird was found nestled in the shell of a coconut.
这只鸟被发现藏在椰子壳里。
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2. The treasure was hidden in the shell of an old chest.
宝藏藏在一个旧箱子的壳里。
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3. The box was placed inside the shell of the turtle.
盒子被放在乌龟壳里。