英文：A clamping device of metal or wood, usually consisting of two jaws closed or opened by a screw or lever, used in carpentry or metalworking to hold a piece in position.
英文：Our institute is clamping down on those who often play truant.
中文：我們學院正在嚴加懲處那些經常逃學的學生。
英文：Increasingly alarmed by high-speed pursuits that are killing hundreds of people every year, police departments around the country, as well as state and Federal lawmakers, are clamping down on the wild, Hollywood-style chases…
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