名词

1. 积压的事情；未完成的工作
A backlog is a number of things which have not yet been done but which need to be done.

1. an accumulation of jobs not done or materials not processed that are yet to be dealt with (especially unfilled customer orders for products or services)

2. something kept back or saved for future use or a special purpose

Synonym: reservestockpile

3. the large log at the back of a hearth fire