at rock bottom短语⁴²⁶⁶⁶ 基本例句 adv.处于最低点 The biggest worry is that the banks are making profits largely because their funding costs are at rock bottom. 但最大的担忧是，银行现在之所以能盈利，主要是因为他们的融资成本已经是低得不能再低。 ecocn On the shop floor, morale is at rock bottom. 在商店的地板上，消费者士气全无。 yeeyan