The researchers delivered short electrical pulses to either the upper left canine tooth (the pointy one) or the lower left canine tooth in the subjects.

科研人员给上颚的左犬齿（比较尖的那颗）或者是下颚的左犬齿注射一个短的电脉冲。

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A tooth with a single cusp. cuspids have the longest root of any tooth. also known as a canine.

只有一个牙尖的牙齿。任何一个尖牙都有一个较长的牙根。也称为犬齿。

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Results: the pear layer powder manufactured with the canine tooth a and the 5% water quantity was good to the nanometer pear powder in the latter operation.

结果：用A式犬齿爆裂装置加水5%的工艺制备的单层薄层珍珠层粉，有利于在后续工序中用以制备纳米珍珠粉。

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He sported a braided leather headband and the curved tooth of a canine around his neck.

WSJ: Learning to Dog Sled in Bavaria, Germany

The training to open their mouths was key to staff spotting a rotting upper left canine bothering Arktos last year and a damaged tooth that troubled Walker in 2011.

BBC: How do you give a polar bear a 'medical'?

There are thousands of art collectors and dog fanciers around the world ready to fight tooth and nail in the dog-eat-dog world of canine collecting.

FORBES: Barking Mad