To lump together arbitrarily

• 混为一谈

To lump together arbitrarily的用法和样例：

例句

1. Don't lump all these different problems together.
   不要把这些不同的问题混为一谈。
2. It is undoubtedly inappropriate to mix the two up.
   把二者混为一谈，无疑是很不适当的。