If it is too difficult you might become discouraged, your concentration will be overtaxed and progress will be slow.

如果太难的话，你可能会感到灰心，注意力消耗殆尽，而且进展缓慢。

youdao

Parents will be given reports on their child's progress and the right to discuss it with a teacher.

家长将收到关于他们孩子进步的报告，并有权就此与老师一起进行探讨。

《柯林斯英汉双解大词典》

If you're losing weight the right way, your progress will be slow and steady.

如果你用正确的方法减肥，你的进展会是缓慢和平稳的。

youdao

"We are making good progress and I am very hopeful that we will be able to get past that issue and move ahead to expand defense cooperation between us,".

VOA: standard.2009.06.11

The process of repair will take time, and progress will be uneven, with periods of stress and fragility.

WSJ: Geithner: My Plan for Bad Bank Assets

And progress will be halting.

WHITEHOUSE: Nuclear Security Summit: Presidential Press Conference

Several industries -- particularly the airline industry and the insurance industry -- have been hit hard by the aftermath of the terrorist attacks, and their progress will be watched closely as a guide to the overall U.S. economic and psychological recovery.

CNN: Recovery: More layoffs in the air