发布于：2025-07-05 23:00浏览量：113文/优校网
1.支持,为...撑腰;堵塞,拦(水);【棒球】抢救后方;【计算机】把(文件等备份)
1.to give support to someone by telling other people that you agree with them
2.to show that an explanation or belief is probably true
3.to make a copy of information on your computer
4.if traffic backs up, or if it is backed up, the vehicles are in a long line and waiting to continue moving; if a toilet, sink, or drain backs up, or if it is backed up, water cannot flow through it because something is blocking it; if a system backs up, or if it is backed up, it has slowed down or stopped working because there is too much of something for it to deal with
5.to move backward a short distance
6.to make a car go backward
7.used for telling someone to return to something that was said earlier
1.to give support to someone by telling other people that you agree with them
2.to show that an explanation or belief is probably true
3.to make a copy of information on your computer
4.if traffic backs up, or if it is backed up, the vehicles are in a long line and waiting to continue moving; if a toilet, sink, or drain backs up, or if it is backed up, water cannot flow through it because something is blocking it; if a system backs up, or if it is backed up, it has slowed down or stopped working because there is too much of something for it to deal with
5.to move backward a short distance
6.to make a car go backward
7.used for telling someone to return to something that was said earlier