Correct

久而久之

/ jiǔ ér jiǔ zhī / 
Strokes

Definition

over time/as time passes/in the fullness of time

Example

Definition

as time passes; in the course of time; with the lapse of time

1
Tā
他
tài
太
zìsī
自私
  
,
jiǔérjiǔzhī
久而久之
  
,
dàjiā
大家
dōu
都
gēn
跟
tā
他
shūyuǎn
疏远
le
了
  
。

He was very selfish, and in time he became estranged from others.

2
Tā
她
jīngcháng
经常
bàoyǐnbàoshí
暴饮暴食
  
,
jiǔérjiǔzhī
久而久之
  
,
wèi
胃
jiù
就
yǒu
有
le
了
máobìng
毛病
  
。

She often eats without restraint and gradually she has developed stomach trouble.

3
Jīqì
机器
yào
要
bù
不
hǎohǎo
好好
yǎnghù
养护
  
,
jiǔérjiǔzhī
久而久之
jiù
就
huì
会
shēngxiù
生锈
  
。

If not properly maintained, machinery would get rusty as time passes.