a. 勤勉的, 刻苦的

Industrious \In*dus"tri*ous\, a. [L. industrius, industriosus:
cf. F. industrieux. See {Industry}.]
1. Given to industry; characterized by diligence; constantly,
regularly, or habitually occupied; busy; assiduous; not
slothful or idle; -- commonly implying devotion to lawful
and useful labor.

Frugal and industrious men are commonly friendly to
the established government. --Sir W.
Temple.

2. Steadily and perseveringly active in a particular pursuit
or aim; as, he was negligent in business, but industrious
in pleasure; an industrious mischief maker.

Industrious to seek out the truth of all things.
--Spenser.
-- {In*dus"tri*ous*ly}, adv. -- {In*dus"tri*ous*ness}, n.