avian sexing 禽类性别鉴定
sex determination 性别判定
biological sex 生物性别
A: How do you identify the males?
A：你如何识别雄性？
B: We use sexing techniques to distinguish them.
B：我们使用性别鉴定技术来区分它们。
1) 确定生物性别
2) 性别鉴定
3) 区分雌雄
1. 确定（生物的）性别
gerund
1. The act of determining the biological sex of an organism.