pin down

1. PHRASAL VERB 确定；证实
   If you try to pin something down, you try to discover exactly what, where, or when it is.
   1. It has taken until now to pin down its exact location...
      直到现在才确定了它的准确位置。
   2. I can only pin it down to between 1936 and 1942...
      我只能确定是在1936至1942年期间。
   3. If we cannot pin down exactly what we are supposed to be managing, how can we manage it?
      如果我们都不能确切地知道自己该管理什么，那又怎么去管理呢？
2. PHRASAL VERB 迫使…作出决定（或明确表态）
   If you pin someone down, you force them to make a decision or to tell you what their decision is, when they have been trying to avoid doing this.
   1. She couldn't pin him down to a date...
      她没有办法强迫他答应约会。
   2. ...their repeated efforts to pin him down on a number of topics...
      他们迫使他对一系列问题明确表态的再三努力
   3. If you pin people down, they will tell you some puzzling things about stress.
      如果非让他们说的话，人们会告诉你一些有关压力的令人费解的事情。

1. He was sure he would pin down the enemy between two firing lines.
   他确信自己能够把敌人压制在两条火力线间。
2. It has taken until now to pin down its exact location
   直到现在才确定了它的准确位置。
3. I can only pin it down to between 1936 and 1942
   我只能确定是在1936至1942年期间。
4. If we cannot pin down exactly what we are supposed to be managing, how can we manage it?
   如果我们都不能确切地知道自己该管理什么，那又怎么去管理呢？
5. She couldn't pin him down to a date
   她没有办法强迫他答应约会。
6. If you pin people down, they will tell you some puzzling things about stress.
   如果非让他们说的话，人们会告诉你一些有关压力的令人费解的事情。
7. The task of their regiment was to pin down one of the flanks of the invading army.
   他们团的任务是牵制侵略军的侧翼。
8. We should use our secondary forces to pin down several enemy columns.
   我们应该用助攻部队来牵制住敌人的几个纵队。
9. The conclusions come from Swiss and Australian researchers who analysed previous studies from around the world to pin down the role of grandparents.
   这一结论出自于瑞士和澳大利亚的研究人员，他们分析了此前世界各地的相关研究，以确定祖父母的作用。
10. 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。
11. Other causes are harder to pin down.
    其它原因就很难下定论了。
12. But however hard you try, you'll struggle to pin down the identity of this beauty.
    不过不管再怎么想破脑袋，你肯定也还是无法确定这位美人的身份。
13. The question simply has too many possible answers. I can't seem to pin down exactly.
    这个问题有太多可能的答案。我很难作出确定的结论。
14. The Boy had to pin down the dog to wash him.
    这男孩必须扣牢这只狗帮它洗澡。
15. But it took up to now to witness the process in action and pin down the mechanism.
    但直到今天才能亲眼目击这一过程并阐明它的机制。
16. Yet this number is hard to pin down.
    但这个数字很难弄清楚。
17. But we have got now to pin down specific plans and specific implications for jobs.
    但是我们现在必须确定详细计划并预计其对工作岗位产生的具体影响。
18. He is a difficult man to pin down.
    他是个不易就范的人。
19. Officials are trying to pin down the cause of widespread power cuts.
    官员们正在设法确定大面积停电的原因。
20. If you could try and pin down where you were.
    如果我能确定你到底在哪儿。
21. He's really difficult to pin down& you'll have to be persistent.
    让他明确表态很难&你必须坚持。
22. Such criminality may be hard to pin down after all this time, but it is worth the effort.
    过了这么久，现在再对这种犯罪行为采取行动的难度很大，但人们仍值得付出努力。
23. To pin down the size of an orbital, we take a contour surface.
    为束缚住轨道的大小，我们取一等值面。
24. Damn! That was terrible. I only knocked the 10 pin down.
    该死！真糟糕，我只击倒了10号瓶子。
25. It is easier to pin down fraud at the bottom of this chain that at the top.
    揭露这个链条底部的欺诈行为，要比针对链条顶部更容易。
26. It was difficult for me to pin down the subject.
    对我来说，要弄清楚这个问题很困难。
27. I know there's something wrong but it's hard to pin down.
    我知道有点不对头，可是很难证实。
28. It is hard to pin down what has been causing honeybees to vanish.
    很难确定是什么原因使蜜蜂突然消失。
29. It was difficult to pin down exactly what it was in her that pleased him so much.
    很难确切说清她身上有什么东西使他这样动心。
30. The one hope Pluto fans had for revenge was that it was very tough to pin down Eris'size exactly.
    冥王星的粉丝曾有一复仇的希望，那就是要准确确定厄里斯星的大小是很难的。

verb

1. define clearly
   1. I cannot narrow down the rules for this game

   Synonym:    peg downnail downnarrow downnarrowspecify

2. attach with or as if with a pin
   1. pin up a picture

   Synonym:    pin up

3. place in a confining or embarrassing position
   1. He was trapped in a difficult situation

   Synonym:    trap