以下为句子列表：
英文: If tubular frames are used for the construction of berths, they should be completely sealed and without perforations which would give access to vermin.
中文: 如床架为管状材料，应将它们完全封闭，不留孔穴，以免害虫进入。
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英文: The main problems are related to seepage of carbon dioxide, hydrogen sulphide, radon and other gases from soil cavities directly into indoor air through perforations in the structure.
中文: 主要的问题在于二氧化碳、硫化氢、氡气和其它的气体从土壤的缝隙中直接透过建筑物渗入室内的空气中。
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