To ascertain (something), as through examination or inquiry:查明：如通过观察或询问查明（某事）：I found out the phone number by looking it up. If you're not sure, find out.通过查找我查到了电话号码。如果你不肯定，查一查
To detect the true nature or character of; expose:发现：探明真相或性质；暴露：Liars risk being found out.骗子被揭穿的危险
To detect and apprehend; catch:探明并逮捕；抓住：Most embezzlers are found out in the end.大多数贪污犯最后都被查出并逮捕归案