今天我们要学的词是 ratchet up. Ratchet up 提高，加剧。U.S. Secretary of State John Kerry said that Washington is ready to ratchet up pressure on increasingly aggressive North Korea. 美国国务卿克里说，美国随时准备对越来越肆无忌惮的朝鲜施加更大的压力。The Obama administration has requested a quadrupling of defense spending in Central and Eastern Europe for fiscal year 2017, a move critics say would ratchet up Cold-War era tensions with Russia. 奥巴马政府要求将2017年财政年度用于中欧东欧的国防开支翻两番，批评人士认为此举会让美俄冷战时期的紧张关系再度抬头。好的，我们今天学习的词是 ratchet up, ratchet up, ratchet up...