Because you don't know how much more time you've got-- You can make a guess based on statistics, but as we saw, there's wild unpredictability.

因为你不知道你剩下多少时间-,你可以根据数据进行猜测，但是我们都知道，不可预见性太难把握。

耶鲁公开课 - 死亡课程节选

And so he gets in the backseat and he says, "I bet you can't guess who I am."

他坐在后座里，然后说:“我打赌你猜不出我是谁。”

记忆犹新的乘客 - SpeakingMax英语口语达人

So, maybe you wanted a really fine pot of the kind you used to be able to walk to the corner and pick up at a pottery shop, but you can't get now, so you would want to buy what the Corinthians sell. Guess what?

所以或许过去在大街的,任意一间陶器店里,你都能找到精致的陶盆,现在却找不着,那么你该选择,科林斯人的哪些商品呢,想想看

耶鲁公开课 - 古希腊历史简介课程节选

I guess you can't really work because there's too much unemployment

我觉得你不能先工作，因为失业太多了，

英国的高考 - SpeakingMax英语口语达人

I said, "you're right. I can't guess who you are."

我说：“是的。我猜不出来。”

记忆犹新的乘客 - SpeakingMax英语口语达人

But I guess we can't, because of the rain.

现在看来，因为下雨的关系恐怕没法成行了。

I think 实战 - SpeakingMax英语口语达人