Tornadoes and high winds have swept through the central U.S. plains since Friday, affecting 75 million people in the path.

自上周五以来，龙卷风和强劲的狂风席卷了美国中部平原，影响了沿途的7500万人。

It was only later that small bronze vessels appeared in northwestern China, and at the time of Longshan culture on the central plains.

而后在中国的西北，中原的龙山文化，相继出现铜器，然而都是小型物件。

At the same time, he introduced local customs , geographic culture, and unique species of the western Regions to the central plains, greatly broading people's horizons.

同时，他把西域的风土人情、地域文化、特有物种介绍到中原，大大开阔了人们的视野。

For instance, the civilization of bronze wares prospered in the Shang Dynasty, and large scale of bronze wares were mostly discovered in the central plain regions with its center in the capital Yin of the Shang Dynasty.

例如，商代青铜器文明繁荣，大规模青铜器多发现于以商代都殷为中心的中原地区。