表达非常辛苦怎么说英语

To express that something is very difficult in English, you could say:
"It's a real struggle."
"It's a tough task."
"It's a challenge."
"It's a uphill battle."
"It's a hard slog."
"It's a grueling ordeal."
For example:
"I've been working on this project for weeks and it's a real struggle to get it done on time."
"Studying for the exams is a tough task, but I'm determined to do well."
"Learning a new language is always a challenge, but it's worth the effort."
"Overcoming my fear of public speaking has been an uphill battle, but I'm making progress."
"Training for a marathon is a hard slog, but the feeling of accomplishment makes it worth it."
"Climbing to the top of a mountain is a grueling ordeal, but the view from the summit is breathtaking."