如果您想表达某个困难，可以使用英语中的单词 "difficulty" 或 "challenge"。
"Difficulty" 指的是困难、难度或不方便，例如：
"The biggest difficulty we faced was finding funding for the project." (我们面临的最大困难是为这个项目找到资金。)
"I'm having difficulty understanding the instructions." (我很难理解这些指令。)
"The road to success is often paved with difficulties." (通往成功的道路常常充满困难。)
"Challenge" 指的是挑战、难题或考验，例如：
"The biggest challenge we face is how to reduce our carbon emissions." (我们面临的最大挑战是如何降低碳排放量。)
"Training for a marathon is a physical and mental challenge." (训练马拉松是一个身体和心理的挑战。)
"Overcoming challenges helps us grow and learn." (克服挑战有助于我们成长和学习。)
希望这些信息对您有帮助。