学个词 Learn A Word: ratchet up 提高，加剧

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...