名词
中文翻译：Unknown
同义词：
['sheller', 'pearl extractor例句：1. The shell extractor is used to remove the hard outer layer of the shell.（壳提取器用来去除贝壳的硬外壳。）2. She spent hours using a shell extractor to clean her collection of shells.（她花了几个小时用壳提取器来清理她的贝壳收藏。）']
例句：
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1. The shell extractor is used to remove the hard outer layer of the shell.
壳提取器用来去除贝壳的硬外壳。
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2. She spent hours using a shell extractor to clean her collection of shells.
她花了几个小时用壳提取器来清理她的贝壳收藏。
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3. The pearl extractor was designed to be easy to use and effective in removing small pearls from the shell.
珍珠提取器设计得易于使用，并能有效地从贝壳中取出小珍珠。