我不能告诉你他是否一直这样，这是有充分理由的。

I cannot tell you whether he always did, and that for a very good reason.

youdao

因为海蒂不想显得忘恩负义，她伤心地回答：“我不能告诉你。”

As Heidi did not want to appear thankless, she replied sadly, "I can't tell you."

youdao

我不能告诉你确切的时间。

I can't tell you the exact time.

youdao

I can't tell you in a useful way what it is that your goals in life should be or whatever.

我也不能告诉你,你人生目标应该是什么

耶鲁公开课 - 博弈论课程节选

I will be happy to admit that I read through this I probably cannot tell you what it did unless I really obsessed over these details.

我不得不承认，恐怕我读完后,也不能告诉你它都干了些什么,除非我完完全全被这些细节给迷住了。

哈佛公开课 - 计算机科学课程节选

But the mathematicians told Dirac, "You cannot ignore the negative energy solution because it tells you there's a second solution and you cannot throw them out."

但数学家们告诉狄拉克,你不能忽略负的能量,因为数学告诉我有两个根,你不能随便丢掉

耶鲁公开课 - 基础物理课程节选