A usu. assigned piece of work often to be finished within a certain time.

任务；工作；作业；功课。

Something hard or unpleasant that has to be done.

艰困的工作。

Duty.

赋税。

Undertaking.

事业。

To impose a certain amount of work upon.

派以定量的工作。

To burden with work.

使负重荷；使作苦工。