苦心
kǔxīn
HSK 7
苦心 — kǔxīn
- painstaking effort; the pains someone takes
大家都看得出他的苦心。 dàjiā dōu kàndéchū tā de kǔxīn — Everyone can see the painstaking effort he put in.
- to take a lot of trouble; to do sth with great care and effort
她苦心筹划了这次活动。 tā kǔxīn chóuhuà le zhècì huódòng — She took great pains to plan this event.