main arduous problems

• 主要难题

main arduous problems的用法和样例：

例句

1. Inflation is the government's main bugbear.
   通货膨胀是政府的主要难题。
2. Reducing the gap between rich and poor is one of the main challenges facing the government.
   缩小贫富之间的差距是政府面临的主要难题之一。