名词
中文翻译：保护壳
同义词：
['protective case', 'protective shell']
例句：
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1.The new phone has a protecting casing that is easy to grip.
这款新手机有一个易于握持的保护壳。
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2. The engineerdesigned the machine with a protecting casing to protect it from damage.
工程师设计了这台机器，带有一个保护壳来保护它免受损坏。
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3. The device's protecting casing is made ofhigh-quality materials for durability.
该设备的保护壳由高质量的材料制成，以耐用性。