몹시 힘이 드는, 격렬한, 고된.
Requiring or using great physical or mental effort; taxing or exhausting.
예문:
"The doctor advised him to avoid strenuous physical activity for at least two weeks after the surgery."
"Climbing the steep mountain path proved to be a strenuous task for the amateur hikers."
정력적인, 활발한, 왕성한.
Characterized by vigorous exertion or showing great energy and determination.
예문:
"The company made a strenuous effort to improve its customer service ratings before the holiday season."
"Despite the heavy opposition, she maintained a strenuous defense of her research findings."