求解释这个句子的语法结构和单词意思Police in the United States are questioning a man over some 55 arson attacks in Los Angeles since Thursday,自洛杉矶周四发生连环纵火案以来,至少55处火情涉案,美国警方正在审问一名男子over怎么翻译啊
问题描述：
求解释这个句子的语法结构和单词意思
Police in the United States are questioning a man over some 55 arson attacks in Los Angeles since Thursday,
自洛杉矶周四发生连环纵火案以来,至少55处火情涉案,美国警方正在审问一名男子
over怎么翻译啊
答
over可能是“关于”的意思，in the united states是后置定语修饰police，sinceThursday是状语
答
在…方面，关于
Police in the United States主； are questioning 谓语；a man宾； over some 55 arson attacks in Los Angeles since Thursday,状语
答
【解答】此处的over解释为“关于”,类似about的意思.
【词组】question sb over sth