成兩倍 doubly
兩倍之多 twice as much as ; twice as many ;
的兩倍 Twice ; The two times
兩倍的貴 Twice as expensive
例句：
新駕駛員所出的事故是老駕駛員的兩倍。
New drivers have twice as many accidents as experienced drivers.
在過去的兩年里，食物中毒事件增加了兩倍。
Cases of food poisoning have trebled in the last two years.
在這個(gè)行業(yè)，女性人數(shù)是男性的兩倍。
In this profession, women outnumber men by two to one.