He says it would be unwise to proclaim that no terror attack could occur in his country, but he said there is no known threat at this time.

VOA: standard.2010.06.02

Justin So Justin said it could be new things that are around and you're exposed to stuff we weren't exposed to before and that's true.

贾斯汀,贾斯汀认为我们周围的环境,出现了很多新物质,并且人们暴露在前所未有的环境中,这是事实

耶鲁公开课 - 生物医学工程探索课程节选

You said that there will be homecoming day this week. Could you talk about it in detail?

你说这周末是返校日。能讲详细一点吗？

对于返校日 - SpeakingMax英语口语达人

It could no longer be said that the moon was perfect.

没人能再说月亮是完美无缺的了。

耶鲁公开课 - 弥尔顿课程节选