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, there's 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。