knife-naɪfBNC²³⁶²¹³⁺¹ 基本例句 n.刀;匕首;vt.用刀切;口伤害;vi.劈开;划过 “ We're hoping the vast majority of these corals will be able to recover, but at the moment this whole system is on a knife- edge and we don't know what's going to happen, ” Harrison told AFP. 他向法新社透漏:“我们一直希望那些主要的珊瑚礁被淹没,但这时整个系统却濒临灭亡,我们不知道将会发生什么。” yeeyan