adj.艰苦的，艰难的

The arduous climb to the mountain's peak tested the limits of our endurance.
攀登到山峰的艰辛考验了我们耐力的极限。
After an arduous journey across the desert, they finally reached the oasis.
经过穿越沙漠的艰苦旅程后，他们终于到达了绿洲。
Raising a child as a single parent can be an arduous task, both emotionally and financially.
作为单亲家长养育孩子在情感和经济上都是一项艰巨的任务。
The scientist devoted her life to the arduous research that ultimately led to a groundbreaking discovery.
这位科学家毕生致力于这项艰巨的研究，最终导致了一项突破性的发现。
The athlete had to undergo arduous training to prepare for the marathon.
这位运动员为了准备马拉松比赛，不得不接受艰苦的训练。
Repairing the ancient castle was an arduous undertaking that spanned several years.
修复这座古堡是一项耗时数年的艰巨工程。
The arduous hike through the dense forest required immense physical strength and mental resilience.
穿越茂密森林的艰难徒步旅行需要极大的体力和精神韧性。
Writing a novel is an arduous process that demands creativity, discipline, and perseverance.
写小说是一个要求创造力、纪律性和毅力的艰辛过程。
The arduous negotiations between the two countries lasted for months before a treaty was finally signed.
两国之间艰苦的谈判持续了几个月，最终才签署了一项条约。
Recovering from a major surgery can be an arduous journey with many challenges along the way.
从重大手术中恢复可能是一段充满挑战的艰辛旅程。