1. I can't leave this job at the moment.
我现在离不开。
2. I'm tied up at the moment.
我这会儿正忙呢。
3. It's been a long day.
今天忙了一天。
4. I've got so much to do.
我有很多事要做。
5. I'm too busy to bother with such details.
我没空理会这些细节问题。
6. I'm so busy, I'd really appreciate any help I could get.
我都忙得四脚朝天了。
7. I don't even have time to catch my breath.
我连喘口气的工夫都没有。
8. There's a lot of work piled up on my desk.
瞧我桌上堆了一堆的事儿。