柯林斯词典arduous /ˈɑːdjʊəs/ 1. 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。 返回 arduous剑桥词典difficult , needing a lot of effort and energy 艰难的，艰巨的；费力的 an arduous climb /task /journey 举步维艰的攀登／艰巨的任务／艰难的旅程 返回 arduous