English Original
One day, a young mother brought her two sons to visit our garden. The boys, who looked about four or five years old, sat in a large trolley by the marine fish tanks. They were identical.
"Are they your sons?" I asked the lady.
"Yes!" she replied happily and with pride.
"Are they twins?"
"Yes!" she said, her good mood unchanged.
After a moment of silence, I decided to make a joke. "If they're twins, why are their eyes different? One has black eyes like mine, and the other has blue eyes like yours."
"I know! But I don't know why!" she answered with a smile.
The two boys looked at me strangely.
中文翻译
一天，一位年轻的母亲带着她的两个儿子来参观我们的花园。两个男孩大约四五岁，坐在海洋鱼缸旁的一辆大手推车里。他们长得一模一样。
"他们是你的儿子吗？"我问那位女士。
"是的！"她高兴而自豪地回答。
"他们是双胞胎吗？"
"是的！"她说，愉快的心情依旧。
沉默片刻后，我决定开个玩笑。"既然是双胞胎，为什么眼睛颜色不同？一个像我一样是黑眼睛，另一个像你一样是蓝眼睛。"
"我知道！但我也不知道为什么！"她微笑着回答。
两个男孩奇怪地看着我。