adj.灰白的；古老的
His hoary hair showed his age. 他的花白的头发显示出了他的年龄。
He told us a hoary old joke that we'd all heard many times before. 他给我们讲了一个我们都听了很多次的老掉牙的笑话。
They discussed the hoary old problem. 他们讨论老问题。
adj.白头发的
