| 短语 | back something up |
| 释义 | back something up 1. Computing make a spare copy of data or disk 【计算机】为…备份。 2. （一般作be backed up）cause vehicles to form into a queue due to congestion 使（车辆）堵塞： the traffic was backed up a couple of miles in each direction. 各方向的车辆都堵了数英里。 |
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