The train collision in east China's Zhejiang Province has killed 35 people and left 192 others injured as of Sunday nigh

问题描述:

The train collision in east China's Zhejiang Province has killed 35 people and left 192 others injured as of Sunday night,said a spokesman with the Ministry of Railways.
这里面的a spokesman with the Ministry of Railways.里with怎么用的?请详细通俗的给我讲讲吧~

后面的the Ministry of Railways 修饰spokesman,在这里with就相当于of的意思.