艰巨的

The training corps finished the difficult drill.

训练兵团完成了这项演习。

The general assigned him to do the tough task.

将军派他去完成这项务。

Tell us how you fulfilled the heavy task ahead of schedule.

"告诉我们,你们是怎样提前完成这务。"

The country faces a huge task of national reconstruction following the war.

战后，该国面临着重建家务。

He shrank from a hard task.

他害怕务。