照片和图纸怎样复制呢？
看起来就像一个十几岁复制图像使用描图纸的插图。
The illustrations look as though a teenager copied an image using tracing paper.
图纸应由工程师单独保管，但应免费提供给承包商两套复制件。
The Drawings shall remain in the sole custody of the Engineer, but two copies thereof shall BE provided to the Contractor free of charge.
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