HSK V7-9
Correct

苦心

/ kǔxīn /
Strokes

Definition

painstaking effort/to take a lot of trouble/laborious at pains

Example

As a Noun

trouble taken; pains

1
Biè
辜负
le
de
piān
xīn
苦心
  

Don't let her down; she has done so much for you.

2
Gōngfu
功夫
xīn
苦心
rén
  

He who works hard will be rewarded. / He who has taken pains will surely stand to gain.

3
父母
chángcháng
常常
wéi
jiào
教育
子女
ér
shāfèixīn
煞费苦心
  

Parents often take great pains in educating their children.

4
Shāfèixīn
煞费苦心

spend endless pains on; go to (any) great pains/any pains to do sth; take great pains to do/with sth

5
Fèijìn
费尽
xīn
苦心

be at pains to do sth; expend much care on sth

6
piān
xīn
苦心

with great pains

As an Adverb

(do sth) with great effort

7
xīn
苦心
zuānyán
钻研

do painstaking research