今天我们要学的词是 mechanism. Mechanism 机制。Britain will trigger the mechanism to leave the European Union next week. 英国下星期将启动离开欧盟的机制。Pakistan and Afghanistan agreed last week to form a joint mechanism to counter the common threat of terrorism. 巴基斯坦和阿富汗上星期一致同意，建议一种联合机制，共同打击双方共同面对的恐怖主义威胁。 好的，我们今天学习的词是 mechanism, mechanism, mechanism...