laborious
/ləˈbɔ:rɪəs; lə`bɔrɪəs/ adj
1 (of work, etc) needing much effort （指工作等）艰苦的, 费力的
a laborious task 艰苦的工作.
2 showing signs of greateffort; not fluent or natural 吃力的; 不流畅的; 不自然的
a laborious style of writing 艰涩的文体. Cf 参看 laboured (labour2).