buy minus的意思|示意

The real secret is to buy only in situations in which debt servicing costs are less than rental income minus expenses .

房地产的秘密就在于只有在这种情况下才可以购房，即债务偿还开销要低于扣除份额中 日常开销之后的租金收入。

Policymakers also cut a key interest rate to a historic low of minus 0.3 per cent and agreed to buy more assets with the proceeds of its existing bond purchases.

政策制定者还将关键利率降至-0.3%的历史低点，并同意将现有债券购买的收益用来买入更多资产。