So, I advice them as to what industries will be important when they get out of college; what military service they should look into, in order to achieve what they think they want to achieve. Sometimes just to tell these young men and women that life is a wonderful thing 他们将长大成人，身处人生的这个阶段是很幸运的。

答案：they are fortunate to be in a stage of their lives where they are about to become adults.
本句节选自《A Word on Advice》

总结：
本期想要总结的只有一点就是关于处在某一阶段，可以说成 be in a stage of
我记得在一次练习的时候还翻译过一个句子，是说走上讲台，当时也是用的stage这个单词，所以大家要多体会native speaker的说法。