surefire
adjective [ before noun ] informal uk/ˈʃɔː.faɪər/ us/ˈʃʊr.faɪr/
肯定的，可能的;（尤指）肯定（或可能）会成功的
certain or likely, especially to succeed
The film looks a surefire Oscar winner. 看来这部电影一定会得奥斯卡奖。
Running into the street like that is a surefire way to get hurt. 那样跑到路上去肯定会受伤的。