B2 the act or process of examining a crime, problem, statement, etc. carefully, especially to discov

中文解释

（对犯罪，问题，陈述等的）调查（尤指为了发现真相） An investigation has been under way for several days into the disappearance of a 13-year-old boy. 对一名13岁男孩失踪展开的调查已进行了好几天。