In the ancient world, it was probably rare to castrate a dog or cat.

古时候可能很少阉割猫或狗。

《柯林斯英汉双解大词典》

Objective: to observe the effects of Epimedium total Flavonoids Phytosomes on preventing and treating bone-loss of the castrate osteoporosis rat model.

目的：观察淫羊藿黄酮磷脂复合物防治去势大鼠骨质疏松症模型骨丢失的药效。

youdao

So, they come to the conclusion that their father is going to castrate them because of their illicit love for their Mom.

所以他们最终总结出,父亲会因为他们对母亲,抱有非分之想而阉割他们。

耶鲁公开课 - 心理学导论课程节选

The latency stage is they've gone through this huge thing with Mom and Dad, "fell in love with Mom, wanted to kill my father, dad was going to castrate me, " fell out of love with Mom, out of the sex business."

在潜伏期阶段,儿童不再纠缠于恋父或恋母情结，从“爱上母亲，想要弑父，父亲要阉割我“，过渡到，“不再恋母，不再对性感兴趣“

耶鲁公开课 - 心理学导论课程节选