學個詞 Learn A Word: ratchet up 提高，加劇

今天我們要學的詞是 ratchet up. Ratchet up 提高，加劇。U.S. Secretary of State John Kerry said that Washington is ready to ratchet up pressure on increasingly aggressive North Korea. 美國國務(wù)卿克里說，美國隨時準備對越來越肆無忌憚的朝鮮施加更大的壓力。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. 奧巴馬政府要求將2017年財政年度用于中歐東歐的國防開支翻兩番，批評人士認為此舉會讓美俄冷戰(zhàn)時期的緊張關(guān)系再度抬頭。好的，我們今天學習的詞是 ratchet up, ratchet up, ratchet up...