1 public good

2 public welfare

1 benefit

2 (in sb's) interest

3 classifier: 个 gè

1 to benefit from

2 profit

1 to benefit (from)

1 to make life longer

2 to promise longevity

3 (this product will) extend your life

1 bringing great benefits (idiom); very useful

2 of great service

3 to help greatly

4 to serve one well

1 futile endeavor (idiom)

1 add firewood to put out the flames (idiom); fig. ill-advised action that only makes the problem worse

2 to add fuel to the fire

1 harmful and without benefit (idiom); more harm than good

1 wishing for profit, but causing loss (idiom); good intentions that lead to disaster

2 It all ends in tears.