double layer双层
double room双人房
2.The Chiefs nearly doubled the Ravens in total yardage and time of possession.
酋长队向前推进的距离和控球时间几乎是乌鸦队的两倍。
4.For instance, the use of raised toilet seats has more than doubled since the start of the study, and the use of bath seats has grown by more than 50%.
例如,自研究开始,高架马桶座圈的使用增加了一倍以上,而浴缸座圈的使用增加了50%以上。