HSK V7-9
Correct

白白

/ báibái /
Strokes

Definition

in vain/to no purpose/for nothing/white

Example

As an Adverb

vainly; ineffectively; fruitlessly; in vain; for nothing; to no avail/purpose; without result

1
Zhè
jiǎnzhí
简直
shì
báibái
白白
làngfèi
浪费
jīng
精力
  

This simply means a waste of energy.

2
yào
不要
ràng
shíguāng
时光
báibái
白白
liúshì
流逝
  

Don't let time slip by. / Don't idle your time away.

3
Báibái
白白
sòng
送死

die in vain

4
Báibái
白白
làngfèi
浪费
huì
机会

let an opportunity slip through one's fingers