2--What do you think this abbreviation means? MIA.
 
1--Jonathan! How've you been? It has been so long since I've seen you.
 
2--Yeah, I've been MIA for a while.
 
1--I went down to Brazil and spent two weeks with my family in Rio de Janeiro.
 
2--I just got back a few days ago.
 
1--Oh! I hear that Rio is so exciting with beautiful beaches and music.
 
2--Yeah. I might just go MIA again soon!
 
1--MIA is an abbreviation for missing in action.
 
2--You can use this expression when someone "disappears" and you don't see them for a long time.
 
1--People in the military say a soldier is MIA if that person is not found after a battle.
 
===================================
注解：

1.abbreviation缩写
2.MIA战斗中失踪的 
3.military军事的

===================================
译文：

1--美国人使用许多缩略词，或者是简短的表达。
2--你知道这个缩略词是什么意思吗？MIA
1--乔纳森！你去哪了？好长时间都没有见过你了。
2--是的，我是失踪了一段时间。
1--我去了巴西里约热内卢，跟我的家人在那呆了两周。
2--我前些日子才回来。
1--哦！我听说里约迷人的海滩和美妙的音乐激动人心。
2--是的！近来我也许要再次消失了！
1--MIA是“军事行动中消失”短语的缩略词。
2--你可以用这个表达来形容某人“消失”不见很长时间。
1--人们用MIA来形容军事中战后失踪的战士。