名词
中文翻译：外壳
同义词：
['shell', 'outer shell', 'outer case']
例句：
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1.The engineer carefully removed the outside casing to inspect the inner components.
工程师小心翼翼地拆卸外壳以检查内部组件。
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2. The new phone has a sleek design with an outside casing made of high-quality materials.
这款新手机拥有光滑的设计，外壳由高质量的材料制成。
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3. The scientist used a microscope to examine the inside of the outside casing of the sample.
科学家使用显微镜检查样本外壳的内部。