In Philip's case, we ask the question, does he have zero or none zero socks on his feet?

在飞利浦这个例子中，我们就需要判断，他的脚上有没有袜子？

哈佛公开课 - 计算机科学课程节选

But Achilles, of course, he got him in the heel where he didn't have any armor.

但阿喀琉斯,是脚踵中箭,他也是没有穿盔甲的

耶鲁公开课 - 古希腊历史简介课程节选