v. 两倍；加倍努力；快步走（double 的过去式和过去分词）
1.She doubled the blanket and put it under his head.
她把毯子折叠起来给他做枕头。
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。
3.She doubled the blanket and put it under his head.
她把毯子折叠起来给他做枕头。
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。
5.Following statewide redistricting last autumn, black representation in both the House and Senate doubled.
继去年秋季的全国性的新行政区划后，众议院和参议院中的黑人代表们都翻了一番。
6.Membership almost doubled in two years.
两年内会员数目几乎翻了一番。
7.From 2004 to 2013, agricultural land values doubled, and they continue to rise in many regions.
从2004年到2013年，农业用地价值翻了一番，而且在许多地区还在继续上升。