苦労， 苦勞， くろう
1. trouble, hardship, difficulty, labour, labor, toil, pains
2. anxiety, worry, concern, cares
麻烦，艰辛，困难，劳动，劳作，辛劳，痛苦；焦虑，忧虑，关切，烦恼
-----------------------------------
@ 困難， こんなん
1. difficulty, hardship, trouble, distress
2. infeasibility, inability (to carry out)
困难；不可行性，无能为力（执行）