单词：speed up
[经] 加速
speed up的用法和样例：
例句
- Harden up a little, we need more speed.把帆索拉紧一点，我们需要加快速度。
- As we came onto the open road we gathered speed.到达大路后，我们逐渐加快速度。
词汇搭配
- pick up speed加快速度
- up to speed了解最新情况,听取汇...
- speed up加快速度
- the speed-up system血汗劳动制
- accelerate加速
- antedate使 ... 提前发生...
- expedite加速
- speed速度
- quicken使加快
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