动词短语
中文翻译：自封的
同义词：
['self-contained', 'self-seal', 'self-sealed']
例句：
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1.The door was self-sealed shut after the storm.
暴风雨过后，门自己关上了。
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2. The new building is self-sealed with its own security system.
这座新大楼配备了自己的安全系统。
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3. The project is self-sealed and cannot be easily modified.
这个项目是自封的，不容易修改。