费劲 (fèi jìn): Strenuous (Verb) — Meaning & Stroke Order

Walking is very strenuous for me.

Do you feel it's worth the strenuous effort you're putting into learning this new language?

After mastering the method, completing this task is not strenuous at all.

Understanding this complex math problem took me a lot of effort.

He strenuously climbed to the mountaintop just to admire the magnificent sunrise.