mating spine

例句：

1. 1. The male deer has a mating spine that helps it attract females.
   雄性鹿有一根交配刺，有助于吸引雌性。
2. 2. The female deer uses her hooves to dig a shallow pit forthe male to deposit his sperm.
   雌性鹿用蹄子挖一个浅坑，让雄性鹿将精子排放到里面。
3. 3. Themating spine is a unique feature ofthe deer species, providing them with anadvantage in finding mates.
   交配刺是鹿种的独特特征，为它们寻找配偶提供了优势。