pin down的意思跟用法?

1. If you try to pin something down, you try to discover exactly what, where or when it is. 找出什麼、哪裡、何時。(可翻確定)
如：Pin down its exact location，找出切確的位置。
I can only pin it down to between 1936-1950。將範圍縮至1936-1950。
2.pin someone down, you force them to make a decision or to tell youwhat their decision is, when they'ven been trying to avoide doing this. 他們不想，你卻強迫他們決定或告訴你他們的決定。(可翻約束、牽制)
如：pin him down to a date
希望對你有所幫助!