名词
中文翻译：外部凹陷
同义词：
['external depression', "external indentation例句：1. The car's exterior recessing is designed to protect the interior from damage.（汽车的外部凹陷设计用来保护车内不受损害。）2. The company has been working on an external recessing for months.（该公司已经花了几个月时间在开发一个外部凹陷。）3. The engineer carefully measured and marked the external recessing before starting the work.（工程师仔细测量并标记了外部凹陷，然后才开始工作。）"]
例句：
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1. The car's exterior recessing is designed to protect the interior from damage.
汽车的外部凹陷设计用来保护车内不受损害。
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2. The company has been working on an external recessing for months.
该公司已经花了几个月时间在开发一个外部凹陷。
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3. The engineer carefully measured and marked the external recessing before starting the work.
工程师仔细测量并标记了外部凹陷，然后才开始工作。