battering ram

n.

（古代）攻城（木或铁的）槌；

复数：battering rams

Battering ram
Battering ram
Battering ram
Siege Engine
Houston uses A&M as battering ram
Freedom of association: Battering ram or Trojan horse?
Fabio's Right, Heskey Can Bully Bilic's Boys into Submission ; by Going for the Battering-Ram Approach of the Villa Striker, England...
A 'nano-battering ram' for measuring surface forces: obtaining force–distance curves and sidewall stiction data with a MEMS device
Arming States’ Rights: Federalism, Private Lawmakers, and the Battering Ram Strategy
Spain's interventionist and authoritarian communication policy: Telefonica as political battering ram of the Spanish right
'LIFELONG LEARNING IS THE BATTERING RAM AGAINST INEQUALITY'
The Bridge or the Battering Ram?
Dodging disaster. Hurricane Katrina struck New Orleans like a battering ram, but Sid Seruntine was ready