基本解釋[經(jīng)濟(jì)學(xué)]觸及生效選擇權(quán)英漢例句權(quán)威例句Last month, I directed my economic team to work with the Federal Housing Finance Agency -- or FHFA -- and their partners in the housing industry to identify barriers to refinancing, knock those barriers down, and explore every option available to help many American homeowners to refinance.WHITEHOUSE: President Obama Speaks on Housing and the Economyknock-in option更多例句詞組短語短語down knock -in option 下降敲入期權(quán)knock-in option更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)觸及生效選擇權(quán)