2--Here is an idiom about icebergs: "TIP OF THE ICEBERG"
 
1--Did you see that story about the university scandal?
 
2--A professor got in trouble for giving 90 percent of his students As.
 
1--Some hadn't even come to class...all semester!
 
2--It's a huge scandal. That's probably just the tip of the iceberg.
 
1--I bet there are more teachers, and maybe even administrators involved.
 
2--If something is the tip of the iceberg, it's a small part of a much larger issue.
 
1--Most of an iceberg is actually underwater.
 
2--The bigger danger is below the surface.
 
1--People usually use this idiom when talking about a problem.
 
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注解：
 
1.iceberg冰山
2.floating漂浮的
3.scandal丑闻

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译文：

1--冰山是一大块漂浮在海洋的冰体。
2--下面有一个关于冰山的谚语：“冰山一角”
1--你听说过那件关于大学丑闻的事了吗?
2--一个教授惹上了麻烦，因为他给他90%的学生都打了A
1--但其中一些学生甚至没有去上课。一整个学期都没上!
2--这真是个大大的丑闻啊。这或许只是冰山一角。
1--我敢打赌肯定还有更多的老师甚至可能学校的管理层都参与其中
2--如果说某事是冰山一角，那么指的是它是某个大问题的一小部分。
1--冰山的大部分山体是在水下的。
2--主要的危险实际上隐藏在表面之下。
1--人们常常用这个谚语来描述问题。