President ronald reagan in 1981 authorized deployment in missiles and howitzer shells .

1981年，里根（ronaldreagan）总统授权将中子弹应用于导弹和榴弹炮炮弹。

In 2003 authorized for postgraduate candidate teacher .

2003年批准为博士生导师。

Only authorized translators and academics dared to use english .

只有官方认可的译者和学者才能使用英语。

Or an authorized agent thereof ?

或是委托代理商吗?

Apple has two retail stores in beijing , three in shanghai , one in hong kong and a network of authorized resellers .

苹果在北京有两家零售店，三家在深圳，一家在香港还有经授权的中间商网络。