pin down

英 [pɪn daʊn]

美 [pɪn daʊn]

确定; 证实; 迫使…作出决定（或明确表态）

柯林斯词典

• PHRASAL VERB 确定；证实
  If you try topinsomethingdown, 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？
• PHRASAL VERB 迫使…作出决定（或明确表态）
  If youpinsomeonedown, 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。

英英释义

verb

• define clearly
  1. I cannot narrow down the rules for this game
  Synonym:peg downnail downnarrow downnarrowspecify
• attach with or as if with a pin
  1. pin up a picture
  Synonym:pin up
• place in a confining or embarrassing position
  1. He was trapped in a difficult situation
  Synonym:trap

双语例句

• 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。
• 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。
• 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？
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。