So what we think we know derives chiefly from archeological evidence, which is before writing--mute evidence that has to be interpreted and is very complicated, and is far from secure.

我们目前所认为的史实,主要都是从考古证据中所得,这些无声的证据出现于文字记录之前,因此就需要繁复的考证及解读,这些考证未必可靠

耶鲁公开课 - 古希腊历史简介课程节选

Officers must secure corroborating evidence in the UK before a prosecution becomes possible.

BBC: Nepal torture suspect held by Metropolitan Police

The deviations are too small to be seen in any single quasar, but by averaging the results for 72 quasars the team claims to have secure statistical evidence.

ECONOMIST: Fundamental physics

Ms Porter said the gap between the number of homophobic hate crime incidents reported to the police and the number of convictions exists because many cases fail to secure enough evidence for prosecution.

BBC: Gay hate crime convictions rise