今天我們要學的詞組是ratchet up。Ratchet up，意思是激化、加劇 。North Korea's foreign minister ratcheted up tensions, saying his country had the right to shoot down U.S. planes even outside North Korean airspace. 朝鮮外交部長加劇了緊張關(guān)系，稱他的國家有權(quán)利擊落美國飛機，即使是在朝鮮領(lǐng)空之外。Turkey announced that it had finalized a multibillion-dollar purchase of Russia's most sophisticated surface-to-air-missile system, which has ratcheted up tensions with the NATO military alliance to a new level. 土耳其宣布，已經(jīng)完成了一筆數(shù)十億美元的交易，購買俄羅斯最尖端的地對空導彈系統(tǒng)，這使其與北約軍事聯(lián)盟的緊張關(guān)系進一步激化。好的，我們今天學習的詞組是ratchet up, ratchet up, ratchet up...