今天我们要学的词是 irrevocable.
Irrevocable 的意思是不可逆转、不可取消的。
Although North Korea has halted missile tests and shut down its nuclear testing site, many experts say those are neither irrevocable nor serious steps to show the country is sincere about denuclearization. 虽然朝鲜已停止导弹测试并关闭其核试验场地，但许多专家表示，这些既非不可逆转，也非朝鲜为显示其无核化的诚意而采取的认真措施。
In Cuba, voters ratified a new constitution Sunday, reaffirming socialism as the nation's “irrevocable” system of governance. 古巴选民们周日通过了一部新宪法，重申社会主义是治理该国“不可改变的”体系。
