这座设计拙劣的桥需要做补救工作，以确保它的安全。
The poorly designed bridge needs remedial work to make it safe.
这座设计拙劣的桥需要做补救工作，以确保它的安全。
The poorly designed bridge needs remedial work to make It'safe.
混凝土外观质量控制通常指为使混凝土外观质量达到设计要求而采取的预防措施和补救措施。
Quality control on concrete surface often means precautions and remedial measures taken for meeting the design requirements of concrete surface quality.
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