"involving much labor," 1670s, from Latin operosus "taking great pains, laborious, active, industrious," from opus (genitive operis) "work" (see opus). Related: Operosity.
实用例句
1. What an operose method!
多么费事的方法呀!来自《现代英汉综合大词典》
2. What an operose business it is to establish a government absolutely new.
