I watched a couple of cops put a clamp on a green Mercedes.

我看到几个警察给一辆绿色奔驰车加上丹佛锁扣。

《柯林斯英汉双解大词典》

Blades without clips are held by screws and the clamp on the handle.

失去金属夹的刀片由螺丝和手柄上的夹子固定。

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Take this waltz with the clamp on its jaws.

和着它颌骨上的夹击，跳这首华尔兹。

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The peace dialogue had lowered tensions between the rivals, but has flagged amid repeated Indian accusations that Pakistan is not doing enough to clamp down on terror groups operating from the country.

VOA: standard.2009.10.28

Ten states are moving on their own to clamp on down on vehicle emissions of greenhouse gases.

NPR: States Push Automakers on Fuel Efficiency

And while corporate America can continue to achieve record profits by shipping jobs overseas as they put a severe clamp on the earning potential of their domestic workers (while enjoying ever-rising productivity by these workers), small business is, indeed, left holding they bag.

FORBES: 3rd Quarter Corporate Profits Reach Record High-Worker Pay Hits Record Low:So How Exactly Is Obama The 'Anti-Business' President?

The U.S. in recent months has put increased pressure on Pakistan to clamp down on insurgent groups, especially the Taliban-affiliated Haqqani network.

WSJ: Attacks Point to New Afghan Conflict