请问是“centre around”还是“center around”?

中心的英语是center还是centre? 英语翻译是news center 还是 Press Centre 是个机构 run around的around是介词还是副词啊? around “around 请问这个句子怎么翻译.The shoping center is just around the comer. 请问 turn around 的around是什么意思? 这是一个什么语法现象Often we just walk around the town center,seeing a 请问下centre与center区别,那个是美语,那个是英语? look around ,throw about,这里的around 和about 是副词,还是介词 go around的around是副词还是介词?怎么区分?怎么叫介词? 到底是just around the comer还是just around the corner?