走的很艰难可以用 "It's a tough journey" 或者 "It's a difficult road" 来表达。这个短语的来源可能源于比喻，即生活中的道路有时会很艰难，就像走一条崎岖不平的道路一样。
例句：
It's been a tough journey, but I'm finally graduating from college.
这是一段艰难的旅程，但我终于要从大学毕业了。
She knew it would be a difficult road, but she was determined to succeed.
她知道这将是一条艰难的道路，但她决心要成功。