vigorous
adj
(a) strong, active or energetic 强壮的; 积极的; 有力的
avoid vigorousexercise, exertion, etc 避免强度大的锻炼、 劳动等
vigoroussupporters of human rights 积极拥护人权运动的人.
(b) using forceful language, etc 语言犀利的
vigorous debate, criticism, opposition, etc 有力的争辩、 批评、 反对等
the poem's vigorous rhythms 这首诗铿锵的韵律. vigorously adv
shake sb's hand vigorously 用力握某人的手
argue vigorously in support of sth 为某事物奋力争辩.
I'm not sure. I ought to do some studying, as I've got masses of work to do, but I think I'll be too tired. Maybe I'll just watch the news on television and go to bed early.