苦心 kǔxīn painstaking effort
painstaking effort; to take a lot of trouble; laborious at pains
怎么记住“苦心”: 苦 bitter + 心 heart = painstaking effort.
汉字
用法
- Painstaking effort / careful thought put into something - 一片苦心 (yí piàn kǔxīn) well-meaning painstaking effort; 苦心经营 (kǔxīn jīngyíng) to run/build with great pains.
- Stresses the trouble and heart someone quietly invests, often for another's sake and unappreciated.
- 白费苦心 = one's efforts are wasted; 苦口婆心 (patient earnest advice) is related.