他们低估了任务的艰巨性。

They underestimated the difficulty of the task.

youdao

这项任务的艰巨性不能成为逃避它的借口。

The difficulty of the task is no excuse for avoiding it.

youdao

因此，反恐斗争具有长期性、艰巨性和复杂性。 打击?

Therefore, the fight against terrorism is very tough, complex and will take a long time.

youdao

因此，反恐斗争具有长期性、艰巨性和复杂性。 打击?

Therefore, the fight against terrorism is very tough, complex and will take a long time.

youdao