The first is, that while God's promise is sure, the manner and the timing of its fulfillment is quite unpredictable.

首先是，上帝的承诺是确定无疑的，但实现的方法和时机却都是不可知的。

耶鲁公开课 - 旧约导论课程节选

Yeah, driving in LA, it's really unpredictable and can be dangerous.

是的，在洛杉矶开车，真的没法预测，可能很危险。

利用大众交通工具吧 - SpeakingMax英语口语达人

The wilderness allows us the opportunity to experience the challenges that come with unpredictable weather, and saying "How do I deal with it?"

荒野给了我们机会,来感受这些挑战,比如难以预测的天气,让我们自己想一想“该怎么做？“

普林斯顿公开课 - 人性课程节选

Now, let me just make the last point I want to make about this, and that's that because language is material, it has form, it has both closedness and possibility, it's susceptible to the workings of craft, it's also unpredictable. Tosses mobius strip on floor.

让我说关于此事的最后一个观点吧，正因为语言是物质的，它有固定模式，它没有尽头又充满可能，它易受,工艺品的影响，它同时也是不可预知的。

耶鲁公开课 - 1945年后的美国小说课程节选