" If you are of age, you may stay." said Professor McGonagall.

“如果够年龄，可以留下。”麦格教授说。

" Molly, you can't stop Fred and George, " said Mr Weasley wearily, " They are of age."

“莫丽，你不能阻拦弗雷德和乔治，”韦斯莱先生疲倦地说，“他们已经成年了。”

You are of age, and I claim you as mine.

你已经成年了， 我声称你是我的。

" You know you are your own mistress—you are of age" .

“你知道你是你自己的情妇——你已经成年了” 。

Only students who are of age, that is to say, seventeen years or older will be allowed to put forward their names for consideration.

只有年满十七岁，也就是说，十七岁以上的学生，才允许报名，以备考虑。

So, if you are of age – that is if you are over 21 years old, and you have to show identification, then you get a certain color " wristband."

所以，如果你已经成年——也就是说， 如果你超过 21 岁， 并且你必须出示身份证明， 那么你就会得到某种颜色的“腕带” 。