短语词组短语arduous s task 艰巨任务Itis An Arduous Task 个艰巨任务devote to arduous task 专心于艰苦的工作an arduous task 艰难的任务Acceptance of this arduous task 接受这项艰巨的任务the task is arduous 任务艰巨 返回 arduous task