基本解釋[交通運(yùn)輸工程]棘齒起重設(shè)備英漢例句雙語例句The Fed's decision Wednesday to ratchet up the purchase of mortgage-backed securities underscores its willingness to keep spending.美聯(lián)儲(chǔ)周三決定加大收購觝押貸款支持証券,表明了該機(jī)搆繼續(xù)支出的意願(yuàn)。blog.sina.com.cnratchet purchase更多例句專業(yè)釋義交通運(yùn)輸工程棘齒起重設(shè)備