lock horns
角力，争斗

讲解：
头上有角的动物如麋鹿等，雄性在争地盘或争夺和雌性交配的权利时，会低下头用角去顶对方，双方头上的角因而会架在一起，这就是lock horns。lock horns常用来表示各种“正面争斗或角力”。

例句：
During the past six months [Bank of Thailand's governor Chatu Mongol Sonakul and Thai Finance Minister Tarrin Nimmanahaeminda] have locked horns over several big issues: the management of state-run Krung Thai Bank，the whereabouts of funds donated to the government by a Buddhist monk and fraud case involving Tarrins brother.(出自：time，May 22,2000,p. 24 )
过去六个月来，〔泰国银行总裁查图和泰国财政部长塔林〕为了几项重大议题争斗不休：国营柯龙泰国银行的经营问题、一名佛教僧侣捐给政府的款项下落不明、还有塔林的兄弟涉及诈欺案。