【经】 劣币

「一枚劣币，又怎能看见它自己的面值？」

not too bad

bad debt written off【会计】;write-off bad debt【会计】;write-off uncollectible account【会计】

Good news never goes beyond the gate, while bad news spreadfar and wide.

in bad condition

bad debts written off

marriage bad

bad debt expense

bad