... unilaterally adv.单方面地 arduous adj.艰巨的;艰难的；艰苦的；费力的;困难的 conceal vt.隐瞒,隐匿,隐蔽,隐藏 ...
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arduous task 艰巨任务 ; 艰巨的任务 ; 任务艰巨
Long and arduous journey 万水千山 ; 经历长远路途的跋山涉水
arduous difficult 艰巨的 ; 艰苦的
arduous a 劳累的
arduous journey 跋涉 ; 艰苦的旅行
arduous s 费劲的 ; 艰巨的 ; 努力的 ; 辛苦费力的
arduous paths 陡峭的道路
an arduous hill 陡峭的山
"worked their arduous way up the mining valley"
同义词： backbreaking grueling gruelling hard heavy laborious operose punishing toilsome
"your willingness after these six arduous days to remain here"
"the arduous work of preparing a dictionary"
以上来源于: WordNet
ADJ Something that is arduous is difficult and tiring, and involves a lot of effort. 艰难的
...a long, hot and arduous trip.
…一段漫长、灼热、艰难的旅程。
这项工作很艰巨。
We must have patience in doing arduous work.
我们做艰苦的工作要有耐性。
He never seeks credit for himself, but is always ready to take on arduous tasks.
他在荣誉面前从不伸手，但在艰巨任务面前却当仁不让。
Creating the medals is an arduous process. Each one weighs more than 500 grams and took more than 30 steps to manufacture.
VOA: standard.2010.02.16
Speaking to a packed chamber at Stormont, the Northern Ireland Assembly, Hillary Clinton praised lawmakers for progress made in a long and often arduous peace process.
VOA: standard.2009.10.12
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