arduous adj. 费力的；
assiduous adj. 勤勉的；
asynchronous a. 异步的；
atrocious adj. 残忍的；
audacious adj. 大胆的；
auspicious adj. 幸运的；
avaricious adj. 贪婪的；
barbarous adj. 野蛮的
扩展资料
The task was more arduous than he had calculated.
这项任务比他所估计的要艰巨得多。
She undertook the arduous task of monitoring the elections.
她承担了监督选举的.艰巨任务。
All the 6 adventurers survived the arduous journey through the desert.
6名探险家都完成了穿越沙漠的艰难旅程。
The task is arduous; besides, theres not much time.
任务艰巨，同时时间又很紧迫。
This is a hard job.; The task is arduous.
这个任务很吃重。
