stifle的現(xiàn)在分詞是哪個(gè)

　　例句：

　　The government failed to stifle the unrest.

　　政府沒(méi)有制止住動(dòng)亂。

　　They hope the new rules will not stifle creativity.

　　他們希望新規(guī)則不會(huì)壓制創(chuàng)意。

　　These measures will have the effect of stifling competition.

　　這些措施會(huì)產(chǎn)生扼殺競(jìng)爭(zhēng)的后果。