the law went into force last month, following recent research and a shocking number of accidents that involved people using electronic gadgets when crossing the street 經(jīng)過調(diào)查和數(shù)量驚人的因過馬路時使用電子產(chǎn)品而造成的事故后,這條法律在上月開始生效。
under the kyoto climate treaty that went into force last february, 35 industrialized nations committed themselves to reducing or limiting output of six gases, chiefly carbon dioxide, a byproduct of burning coal and oil products 根據(jù)去年2月開始生效的《京都議定書》,35個發(fā)達工業(yè)國家承諾減少或限制6種溫室氣體的排放,其中主要為二氧化碳。