severe challenge

• 严峻挑战

severe challenge的用法和样例：

例句

1. We are facing new difficulties and severe challenges.
   我们面临着新的困难和严峻挑战。
2. The developing countries are facing a serious challenge in their effort to safeguard sovereignty and security.
   发展中国家维护国家主权和安全的斗争面临严峻挑战。