Correct

八辈子

/ bābèizi / 
Strokes

Definition

(fig.) a long time

Example

As a Noun

eight generations—very long time

1
Nā
那
dōu
都
shì
是
bābèizi
八辈子
yǐqián
以前
de
的
shìr  
事儿
le
了
  
。

That was a million years ago.

As a Noun

(of luck) bad, unfortunate, rotten, terrible

2
Wǒ
我
zhēnshi
真是
dǎo
倒
le
了
bābèizi
八辈子
méi
霉
le
了
  
。

What a long string/run of bad luck I've got! / Luck ran terribly against me. / My bad luck was sealed eight generations ago.