完全不同

• quite other
• quite another

例句

1. 尽管这些植物看起来很相似，实际上却属於完全不同的种类。
   Although they look similar, these plants are actually quite distinct.
2. 事实和你所想的完全不同。
   The truth is quite other than you think.
3. 应该做什么和应该怎样做是完全不同的两个问题。
   What to do is one question, and how to do it is quite another.