be in the black idiom
（账户上）有钱，有盈余
If a bank account is in the black, it contains some money, and if a person or business is in the black, they have money in the bank and are not in debt.
Compare: be in the red
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。