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. 确定；证实 [Also VERB n PREPOSITION]
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It has taken until now to pin down its exact location. [VERB PREP. noun]
直到现在才确定了它的准确位置。
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I can only pin it down to between 1936 and 1942. [VERB noun PREP. + to]
我只能确定是在1936至1942年期间。
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If we cannot pin down exactly what we are supposed to be managing, how can we manage it? [VERB PREP. wh]
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？
SYN determine, identify, locate, name
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. 迫使…作出决定（或明确表态） [Also VERB PREPOSITION n (not pron)]
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She couldn't pin him down to a date. [V n P + to/on]
她没有办法强迫他答应约会。
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...their repeated efforts to pin him down on a number of topics. [V n P to/on n]
他们迫使他对一系列问题明确表态的再三努力
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If you pin people down, they will tell you some puzzling things about stress. [VERB noun PREP.]
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。
SYN force, pressure, compel, put pressure on
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