名词中文翻译
中文翻译：密封铅
同义词：
['lead seal', 'lead plug']
例句：
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1.The seal on the jar was broken, so I had to use a different kind of lead.
罐子的封口坏了，所以我不得不用另一种铅。
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2. The lead seal was rusted and needed to be replaced.
铅密封生锈了，需要更换。
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3.The lead seal was used to prevent leaks in old pipelines.
铅密封用于防止旧管道的泄漏。