名词
中文翻译：Unknown
同义词：
['weld pit', 'weld depression', 'weld hole']
例句：
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1. The weld crater on the bridge is a testament to the skill of the craftsmen.
桥上的焊接坑是工匠技艺的见证。
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2. The weld crater was filled with water after the accident, causing a lot of problems.
事故后，焊接坑被水填满，造成了很多问题。
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3. The weld crater was carefully cleaned and repaired before the next construction began.
在下一次建设开始之前，仔细清理和修复了焊接坑。