名词
中文翻译：压实的下基层
同义词：
['compacted subbase', 'compacted sublayer']
例句：
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1. The engineer compacted the soilto prepare for the construction.
工程师压实土壤以准备施工。
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2. The road was built ona compacted subgrade, which madeit stable.
这条路建在压实的下基层上，因此很稳定。
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3. The constructioncrew worked tirelessly to ensure that thecompacted subgrade met all safety standards.
施工团队努力工作，确保压实的下基层符合所有安全标准。