动词
中文翻译：Unknown
同义词：
['sub-plumbing', 'sub-insulation', 'sub-compression']
例句：
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1. The engineer used a sub-filling technique to reinforce the foundation.
工程师使用一种次填充技术来加固地基。
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2. The sub-insulation layer helps keep the building cool in hot weather.
次绝缘层有助于在炎热的天气中保持建筑物凉爽。
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3. During the construction process, sub-compression is used to ensure structural integrity.
在施工过程中，次压缩被用来确保结构完整性。