Okay, so you could be the one to tame him, but he may be difficult to pin down to a long-term relationship.
你可能是征服他的那个人了，但他很难能同你保持长久的恋爱关系。
Depression is a complex disorder and, therefore, difficult to pin down to a single cause. For example, Accutane users often have severe acne, which itself may lead to depression.
抑郁症是一种复杂的病症，因此很难把它的发生归结于单一的因素。比如异维甲酸使用者常常患有严重的痤疮，这种病本身就可能导致抑郁症。
She couldn't pin him down to a date.
她未能迫使他确定下日期。
I need the up-to-date sales figures but I can never pin him down at the office.
我需要最新的销售数字，可就是不能在办公室找到他问清楚。
The cause of the disease is difficult to pin down precisely.
病因目前还难以解释清楚。
It has taken until now to pin down its exact location.
一直到现在才确定了它的准确位置。
I can only pin it down to between 1936 and 1942.
我只能将其确定在1936年到1942年之间。
He tried to pin me down, but I resisted.
他试图制伏我，但我奋力反抗。
It's difficult to pin her down to fixing a date for a meeting.
让她确定个开会日期实在是难。
He set out with an apparently simple aim: to pin down the precise meaning of the concept of "information".
他的出发点显然很简单：确定“信息”这个概念的确切含义。
Inspired by Halley's suggestion of a way to pin down the scale of the Solar System, teams of British and French astronomers set out on expeditions to places as diverse as India and Siberia.
受哈雷提出的确定太阳系大小的方法启发，英国和法国天文学家团队开始在印度和西伯利亚等地考察。
I seem to recognize the quotation, but I cannot pin it down to its author.
这句引文我仿佛见过，但我不能确定它的作者是谁。
You must pin down every quotation to its author.
你一定要确定每一条引文的作者是谁。
Given a matching index, a single index fetch will pin down the row to be retrieved.
给定一个匹配的索引，通过一个单独的取索引操作就可以得到要检索的行。
Some expect Apple and Microsoft to Sue Google. Yet this is unlikely, because the online giant will be hard to pin down.
有些人期待苹果和微软起诉谷歌，然而这是不太可能的事情，因为谷歌这个网络巨人是很难被扳倒的。
Using neutrons to better understand food is a new field but is ideal to pin down sub-nanoscale detail in molecules, says Teixeira.
将中子应用到食品研究中是一个新的领域，但要得到相应分子的亚纳米级信息还需时日，特谢拉说。
If his identity is hard to pin down, his fears and hopes are easier to read.
假如他的身份很难确定，那他的担心和希望还是更容易弄懂一些。
This is to pin down dark matter and dark energy-the 95% of the universe the Standard Model doesn't explain.
这场较量的目的是理解暗物质和暗能量——在宇宙中占95%却无法用标准模型解释。
But it has been difficult to pin down the exact relationships between them.
但要准确定义它们之间的关系还是有困难。
But it is always hard to pin down.
但这始终是难以确切说明。
Culture is a difficult concept to pin down.
文化是一个非常难讲清楚的概念。
This exhibition promises not just to celebrate the work of an important artist, but to pin down an elusive figure.
这次的展览绝对不只是歌颂一位颇具影响力的艺术家的成就，更是要揭开他的神秘面纱，确立他的形象。
After all, being honest or dishonest involves a set of cognitive and social factors which may prove too complex to pin down.
毕竟诚实与不诚实所涉及的可能是太复杂而难以确定的一系列认知和社会因素。
All carbon footprints are hard or impossible to pin down accurately, but the Internet is a particularly complex case.
所有的碳足迹都很难或者不太可能精确地算出来，对于互联网，情况更是复杂。
I seek not to pin it down but to free it by acknowledging that high performance is not as much about achieving a certain state as it is a journey toward something better.
我不求限制它，而是释放对它的束缚，承认它无关于达到某个特定状态，而是一段通往更好的事物的旅程。
Such models may also help to pin down the causes of diseases that arise from the interplay of genetic and environmental factors.
这种模型也许能有助于发现基因与环境因素相互作用而引起的疾病的根本原因。
Knowing that there is a problem does not necessarily help to pin down what it is.
要知道仅仅解决一个问题并不能确切地说明问题的所在。
Knowing that there is a problem does not necessarily help to pin down what it is.
要知道仅仅解决一个问题并不能确切地说明问题的所在。
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