twofold
adjective uk/ˈtuː.fəʊld/ us/ˈtuː.foʊld/
两倍的
twice as big or as much
a twofold increase in the price of natural gas 天然气的价格上涨了两倍。
有两部分的
having two parts
The problem is twofold. 问题有两方面。
twofold
adverb uk/ˈtuː.fəʊld/ us/ˈtuː.foʊld/
（以）两倍（地）
by two times
The sport saw its popularity increase twofold. 这项体育的受欢迎程度上升了两倍。