在十一世纪中国正在产生两个半倍，铁一样在1640年英格兰和威尔士在一起。
In the eleventh century China was producing two and a half times as much iron as did England and Wales together in 1640.
在十一世纪中国正在产生两个半倍，铁一样在1640年英格兰和威尔士在一起。
In the eleventh century China was producing two and a half times as much iron as did England and Wales together in 1640.
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