What must be retained by the business component handler is the identifier of a concrete business component identifier.
业务组件处理程序必须保留一个具体业务组件标识符的标识符。
2
Remove rows that reach a certain age subject to business rules: in this case, certain rows may have reached the normal retirement age but still must be retained.
根据业务规则删除到了一定年龄的行：在这种情况下，有些行虽然到了一般的退休年龄，但是仍然需要保留。
3
By shedding profitable business lines, Citigroup would be relinquishing a source of retained earnings, an important part of a bank's capital base.