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v.发现，查明；确定；困住；压制；迫使（某人）明确表态
1、firing pin───[军]撞针；撞针; 击针
2、pin nailer───钉钉机
3、pin games───别针游戏
4、sear pin───[体]击发阻铁轴
5、dentine pin───牙本质钉
6、oar pin───桨销
7、pin───n.大头针，别针，针；栓；琐碎物；引脚；vt.钉住；压住；将……用针别住
8、scarf pin───围巾夹针
9、pin maudo───固定销
1、Porrello's team are now trying to pin down how the regeneration works in the hope of developing a treatment for adult heart disease.───Porrello的研究小组目前正在确认心脏再生的具体工作过程，以期开发成年心脏疾病的新疗法。
2、He set out with an apparently simple aim: to pin down the precise meaning of the concept of information.───他的出发点显然很简单：确定“信息”这个概念的确切含义。
3、To pin down SOD's relevance, the team has been spiking different types of neurons with the antioxidant to see how the various cells react.───为确定SOD扮演的角色，菲力普斯的研究团队让各种不同类型的神经元表现这种抗氧化剂，然后检视这些细胞的反应。
4、He and Trujillo went back and pored over the older images to help pin down the circular path it travels around the sun.───他和Trujillo回去反复研究了这些老图片以帮助他们确定它环绕太阳公转的轨道。
5、taken until now to pin down its exact location.───现在才确定了它的准确位置。
6、Wheatley and Looser set out to pin down the point at which a face starts to look alive.───惠特丽和露泽着手找出脸在哪个点看起来有生机。
7、Inspired by Halley's suggestion of a way to pin down the scale of the Solar System, teams of British and French astronomers set out on expeditions to places as diverse as India and Siberia.───哈雷提出的确定太阳系大小的方法启发，英国和法国天文学家团队开始在印度和西伯利亚等地考察。
8、It is difficult in this case to pin down how much is too much because many SWFs do not publish accounts.───而在此情况下，界定多少钱算太多也很困难，因为许多ZhuQuan财富基金并不公开账目。
9、Moni Bidin says the method is robust and that larger surveys to come will pin down the dark matter distribution more precisely.───莫尼.必丁说，这种方法是稳健的，接下来的更多的测量将会得出更精确的暗物质的分布。
1、We should use our secondary forces to pin down several enemy columns.