1 عمومی:: دشوار، مشکل ساز، طاقت فرسا، پرزحمت، سخت، پرمشقت
شبکه مترجمین ایران
1 general:: adj. VERBS be, prove | make sth We have changed the course to make it more challenging. | find sth He found the course academically challenging. ADV. extremely, very | quite | enough, sufficiently The tasks were not challenging enough for me and I got bored. | academically, intellectually, politically
Oxford Collocations Dictionary