Pin-down Screen外切后后撤步跳投
Pin Sb Down使某人做出承诺
pin them down压制他们
pin someone down搞清楚
Pin Me Down表演者
Pin n down确定
pin n down to下结论
Pin Down the Causes确定原因
pin down to使受约束
PHRASAL VERB（动词词组） If you try to pin something down, you try to discover exactly what, where, or when it is. 弄明确
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。
PHRASAL VERB（动词词组） 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…明确表态
She couldn't pin him down to a date.
她未能迫使他确定下日期。