名词中文翻译
中文翻译：副级
同义词：
['subordinate', 'subordination']
例句：
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1.The subgrade is a critical part of the road system.
副级是道路系统的关键部分。
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2.The subgrade must be compacted to ensure stability.
副级必须压实以确保稳定性。
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3.The subgrade was designed to withstand heavy traffic.
副级被设计来承受重交通。