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来源:雅诚德英语网
In earlier times it was necessary to design structural systems suitable for the materials that were available, such as wood, stone, brick.
在早期,有必要设计适合现有的例如木材、石头、砖这样的材料的建筑系统。
In earlier times it was necessary to design structural systems suitable for the materials that were available, such as wood, stone, brick.
在早期,有必要设计适合现有的例如木材、石头、砖这样的材料的建筑系统。