Correct

蜻蜓点水

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/蜻蜓点水-Chinese-idioms-Cchatty-b640ce69-bbad-4386-a210-fe3f7b394b56-1612778090.jpg

Collocation

1
只是蜻蜓点水式的
2
像蜻蜓点水一样
3
做事不能蜻蜓点水似的
4
好比蜻蜓点水,一掠而过

Definition

蜻蜓点水

Literally means:

skim the surface of the water like a dragonfly

Actually means:

touch superficially

Literally it refers to a dragonfly that gently touches the water surface and immediately flies away.

Figuratively it means working in a superficial,careless or perfunctory way. Derogatory.

蜻蜓轻轻地碰一下水面就飞走了。

比喻做事不深,不细致,或只触及问题的表面。具有贬义色彩。

Example

Used as object or attributive. (作宾语、定语)
1
zhè
这次
zài
xiāngxia
乡下
de
shìchá
视察
  
,
shì
qīngtíngdiǎnshuǐ
蜻蜓点水
shì
de
  
,
měi
每个
fāng
地方
zhī
tíng
liǎng
一两
xiǎoshí
小时
  

His visit to the countryside was watery, stopping for only an hour or two at each place.

2
Zuò
diàochá
调查
gōngzuò
工作
dìng
一定
yào
quánmiàn
全面
ér
shēn
深入
  
,
guǒ
如果
xiàng
qīngtíngdiǎnshuǐ
蜻蜓点水
yàng
那样
  
,
jiù
无法
liǎojiě
了解
zhēnshí
真实
de
qíngkuàng
情况
  

To do the investigation work must be comprehensive and in-depth, if like a little water, you can not understand the real situation.

3
de
jiǎntǎo
检讨
wánquán
完全
shì
qīngtíngdiǎnshuǐ
蜻蜓点水
  
,
gēnběn
根本
tán
yàohài
要害
wèn
问题
  

His review is a complete water-poisoning and does not address the key issues at all.