咬伤（bite mark）是指人或动物的上下颌牙齿咬合所致的损伤，在攻击和防御时均可形成。由于人体牙弓形态、牙的排列和疏密以及生理、病理变化的不同，加之又会有牙的修复、脱落等变化的影响，所以牙的咬痕具有良好的个体特异性。
双语例句原声例句
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每年这个国家有五万多个孩子被狗咬伤。
Every year in this country more than 50,000 children are bitten by dogs.
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它通过受感染跳蚤的咬伤、直接接触、吸入和极少摄入传染物在动物与人之间传播。
It is transmitted between animals and humans by the bite of infected fleas, direct contact, inhalation and rarely, ingestion of infective materials.
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在任何情况下，她没有表现出一丝恐惧，因为被狼蛛咬伤的风险很高，所以必须阻止她接触狼蛛。
She showed no fear in any of the situations and had to be prevented from touching the tarantula because of the high risk of being bitten.
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Now the pain of a bite, being bit, and then the pain and fear of that is an unconditioned stimulus, unconditioned response.
咬伤所带来的疼痛感，和有此所带来的痛苦与恐惧,就是无条件刺激和无条件反应。
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$firstVoiceSent
- 来自原声例句