That the Iranian elections were fixed is impossible to prove, but that Iranians voted as the official figures indicate seems impossible to believe.

伊朗的大选被事先安排好是不可能证明的，但伊朗大众投票的官方数字显示似乎无法让人信服。

youdao

Unfortunately, predicting the specific time, place, and size of particular large earthquakes is impossible at present, and is probably inherently impossible.

不幸的是，现在根本无法预测出特大地震的精确时间、地点和规模，而且似乎永远无法做到。

youdao

It is impossible to stop that by decree, it is impossible to try to stop that with a fence.

这不可能因为法令而停止，也不可能试图由一道围墙来制止。

youdao

And,she believes in the strength of the human spirit which allows people to reach goals which might otherwise seem impossible.

VOA: special.2009.11.18

These are unquestionably strong words, and I think it's impossible for us to overestimate the weight of these words.

毫无疑问，这些言辞非常激烈，我觉得,怎么高估它们的分量都不过分。

耶鲁公开课 - 弥尔顿课程节选

He wants you to finish everything by tomorrow, but you think it's impossible.

他想让你在明天之前把所有事都做完，但你觉得这肯定是不可能的。

How can I 课堂 - SpeakingMax英语口语达人

The Impossible Project (TIP) wants to make our iPhone photos equally concrete through its extra-simple Impossible Instant Lab.

ENGADGET: Insert Coin: Impossible Instant Lab makes iPhone photos tangible

They mention impossible schedules, impossible requirements, and (of course) yelling and ranting.

FORBES: Does the Difficult Boss Always Deserve to Be Fired?

The essential problem is that the economics of the situation demands politically impossible things and the politics of the situation demand economically impossible things.

FORBES: The Euro Rescue Isn't Going to Work