艰苦

The process of learning a new language can be arduous; it requires patience, persistence, and dedication.
学习一门新语言的过程可能是艰难的，它需要耐心、坚持和专注。
The athletes had to endure the arduous training regimen to prepare for the marathon.
运动员们不得不忍受艰苦的训练计划来为马拉松比赛做准备。
Climbing Mount Everest is an arduous task that only the most experienced climbers attempt.
攀登珠穆朗玛峰是一项艰巨的任务，只有最有经验的登山者才会尝试。
She found the path to recovery from her illness to be long and arduous.
她发现从疾病中康复的道路漫长而艰辛。
The team embarked on an arduous journey across the desert in search of ancient ruins.
这个团队踏上了穿越沙漠寻找古代遗迹的艰难旅程。
Writing a doctoral thesis is often an arduous endeavor that demands extensive research and critical thinking.
写博士论文往往是一项艰巨的任务，需要大量的研究和批判性思考。
Overcoming his fear of public speaking was an arduous psychological challenge for him.
对他来说，克服对公开演讲的恐惧是一个艰巨的心理挑战。
The company faced an arduous task in restructuring its operations after the economic downturn.
经济衰退后，该公司面临着重组运营这一艰巨任务。
His arduous work in the laboratory finally led to groundbreaking discoveries in medical science.
他在实验室中的辛勤工作最终在医学领域取得了突破性的发现。
After weeks of arduous negotiation, the two countries finally reached a peace agreement.
经过数周艰难的谈判，两国终于达成了和平协议。