Correct

左耳(朵)进,右耳(朵)出

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/左耳朵进右耳朵出-Chinese-idioms-Cchatty-cd2a68ef-d8cf-4dba-9a2e-03c4fc74ccca-1612777000.jpg

Collocation

1
某人对待…左耳(朵)进,右耳(朵)出
2
常常是左耳(朵)进,右耳(朵)出
3
成了左耳(朵)进,右耳(朵)出了
4
左耳(朵)进,右耳(朵)出的人

Definition

左耳(朵)进,右耳(朵)出

Literally means:

go in one ear and out the other

Actually means:

It figuratively means that one takes no heed of what others say or does not take other's words seriously. Derogatory.

形容对别人的话或意见不好好听,或毫不在乎,不放心上。具有贬义色彩。

Example

Used as predicate, object or attributive. (作谓语、宾语、定语)
1
Yǒuxiē
有些
jiāzhǎng
家长
lǎoshi
老是
gēn
háizi
孩子
shuō
dàoli
大道理
  
,
háizi
孩子
diǎn
gǎn
xìng
兴趣
  
,
chángcháng
常常
zuǒěr
左耳
jìn
  
,
yòuěr
右耳
chū
  
,
zhèxiē
这些
huà
dāngěrbiānfēng
当耳边风
  

Some parents always say the truth to the child, the child is not interested at all, often left ear into, right ear out, these words as the wind in the ear.

2
ma
妈妈
zhí
一直
zhǔ
嘱咐
chūmén
出门
shí
dìng
一定
yào
xiǎoxīn
小心
qiánbāo
钱包
  
,
zǒngshì
总是
zuǒěr
左耳
jìn
  
,
yòuěr
右耳
chū
  
,
méi
xiǎngdào
想到
jīntiān
今天
zhēn
de
qiánbāo
钱包
diū
le
  

Mother has been telling me to go out must be careful wallet, but I always left ear in, right ear out, did not expect to really lose the wallet today.

3
shǔ
属于
zhǒng
那种
zuǒěr
左耳
jìn
  
,
yòuěr
右耳
chū
de
rén
  
,
xìng
性格
jiào
比较
wēn
温和
  
,
suǒ
所以
hěnduō
很多
shìqíng
事情
shàngxīn
上心
  
,
jiào
计较
  
,
huó
de
tǐng
qīngsōng
轻松
  

He belongs to the kind of left ear into, right ear out of the person, the character is more moderate, so a lot of things do not mind, do not care, live quite easy.