名词短语
中文翻译：外壳塌陷
同义词：
['shell collapse', 'shell failure']
例句：
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1.The hull of the ship was badly damaged during the collision.
在碰撞中，船的外壳严重受损。
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2. The engineers were monitoring the progress of the casing collapse.
工程师们正在监控外壳塌陷的进展。
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3.The sudden collapse of the ceiling caused a panic among the passengers.
天花板突然塌陷，让乘客们惊慌失措。