The theory of complexity shows that although a system may have an optimum state, it is sometimes so hard to identify that the system never settles there.

复杂性理论表明，尽管系统可能存在最优状态，但是有时候我们会发现系统从不处于最优状态。

youdao

You'd be hard pressed to identify what the meter of that is so that's one reason, and of course what — where am I going with the next important point about what's happening in this music?

你会很难确定其中的节拍，这也是原因之一，当然这也是我将要讲解的下个关键点，关于在这类音乐中的情形。

youdao

The arrogant young man is so critical that he found it hard to identify with any of the characters in this novel.

这位傲慢的年轻人太挑剔了，他对这本小说中的任何人物角色都难以认同。

youdao

Why has it been so hard and why does it continue to be difficult to identify these pluripotent cells within tissues?

为什么会那么难呢,为什么在组织中识别多能干细胞,始终困难重重呢

耶鲁公开课 - 生物医学工程探索课程节选

These cells are rare and so it's been hard to identify them, that's part of it.

这些细胞太少了,所以很难找到,这是原因之一

耶鲁公开课 - 生物医学工程探索课程节选

You'd be hard pressed to identify what the meter of that is so that's one reason, and of course what--where am I going with the next important point about what's happening in this music?

你会很难确定其中的节拍,这也是原因之一,当然这也是我将要讲解的下个关键点,关于在这类音乐中的情形

耶鲁公开课 - 聆听音乐课程节选

Why was it so hard to identify and track down this dude?

FORBES: The Erin Andrews peephole pervert is brought to justice, but what about those who continue to watch the video?

Are we so hard-wired to identify gender, in others and in ourselves, that the thought of any ambiguity is a subject to be handled at a distance--or in the impersonal arena of public humiliation?

FORBES: Views on News

So it's a big commitment and it's a very small universe and that's why the campaigns have been working so hard not just to identify people who are likely to caucus and have caucused before, but the people who they can convince to go a caucus for the very first time.

NPR: Decision Time in Iowa