" Malthusian Drill, " explained the Head Mistress. " Most of our girls are freemartins, of course. I'm a freemartin myself."

“马尔萨斯操，”校长解释道，“当然，我们的姑娘大部分都是不孕女，我自己就是。”

Explained the system of labelling–a T for the males, a circle for the females and for those who were destined to become freemartins a question mark, black on a white ground.

解释了标签体系。T表示男性，O表示女性，而命定了要做不孕女的则是白底上的一个黑色问号。