加班
1. 使(自己)心烦意乱(或气愤)
If you work yourself up, you make yourself feel very upset or angry about something.
2. 激发(热情）;鼓起（勇气)
If you work up the enthusiasm or courage to do something, you succeed in making yourself feel it.
3. 使自己出(汗);激起(食欲)
If you work up a sweat or an appetite, you make yourself sweaty or hungry by doing exercise or hard work.
4. 准备，撰写(文章等)
If you work up something such as a piece of writing, you spend time and effort preparing it.
1. develop
e.g. we worked up an as of an appetite
Synonym: get up
2. come up with
e.g. His colleagues worked out his interesting idea
We worked up an ad for our client
Synonym: work out
3. form or accumulate steadily
e.g. Resistance to the manager's plan built up quickly
Pressure is building up at the Indian-Pakistani border
Synonym: build upbuildprogress
4. bolster or strengthen
e.g. We worked up courage
build up confidence
ramp up security in the airports