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来源:雅诚德英语网
Many people have already installed insulation and double-glazing, but more is to be done.
许多人已经安装了绝缘和双层玻璃,但这些还远远不够。
Many people have already installed insulation and double-glazing, but more is to be done.
许多人已经安装了绝缘和双层玻璃,但这些还远远不够。