This is especially true for the harder materials of construction.
对于较硬的建材更是如此。
The materials of construction problem is eased by the lower boiling point.
由于沸点较低，材料问题易于解决。
The materials of construction problem is eased by the lower boiling point .
由于沸点较低，材料问题易于解决。
The materials of construction problem is eased by the lower boiling point .
由于沸点较低，材料问题易于解决。
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