We're to be focusing on building alliances to develop secure energy supplies for the next 20 to 30 years.

我们应该集中精力发展联盟,保证能源供应安全,在今后的20到30年。

普林斯顿公开课 - 国际座谈会课程节选

Here you have somebody who's happy, at ease, and completely secure that there will be food around the corner.

右边的人轻松乐观,百分百确信面包总会有的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Would it be better for people to be able to see everyone and maybe not feel like this is a secure environment in which they can share their interests and what they thought and what they care about?

我们可以选择,将用户信息全部公开,但在这样一个网络环境下,分享自己的所见所闻,所感所想,总会让人觉得不可靠？

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

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