求翻译：1976年7月28日，唐山市发生7.8级地震。地震的震中位置位于唐山市区。这是中国历史上一次罕见的城市地震灾害。顷刻之间，一个百万人口的城市化为一片瓦砾，人民生命财产及国家财产遭到惨重损失。是什么意思？

July 28, 1976, Tangshan 7.8 earthquake occurred in the city. Earthquake epicenter is located in Tangshan City. This is the history of a rare Chinese city earthquake. Suddenly, a city of millions of people into the rubble of life and property and state property suffered heavy losses.

July 28, 1976 7.8 magnitude earthquake occurred in Tangshan City. The Tangshan earthquake epicenter was located in urban areas. This is a rare Chinese history of earthquake disasters in urban areas. In an instant, a 1 million population of urbanization to rubble and state property, and people's live

On July 28, 1976, Tangshan had 7.8 magnitude of earthquakes.The earthquake epicenter position is located the Tangshan urban district.This is in the Chinese history a rare city earthquake disaster.In a moment, a 1,000,000 population city will change into rubbles, the people life and property and the

On July 28, 1976, Tangshan City the magnitude 7.8 earthquake. Location is located in the epicenter of the earthquake in Tangshan area. This is a rare urban earthquake disaster in China's history. Immediately, a million population urbanization is a body of rubble, people's lives and property and Stat

July 28, 1976, Tangshan 7.8 earthquake occurred in the city. Earthquake epicenter is located in Tangshan City. This is the history of a rare Chinese city earthquake. Suddenly, a city of millions of people into the rubble of life and property and state property suffered heavy losses.