●be ˈonto sb1. (informal) know about what sb has done wrong察觉某人的错事（或罪行）◆She knew the police would be onto them. 她知道警察会怀疑到他们头上。2. ( get ˈonto sb) be talking to sb, usually in order to ask or tell them sth要求；告诉◆They’ve been onto me for ages to get a job. 他们要我给他们找工作很久了。◆I must get onto the local council about all the rubbish in the street. 我必须向地方议会指出街上乱扔垃圾的事。