1. 保持：CAM对于高速的数据包模式字符串匹配查找操作来说,我们需要足够快的时间来完成,如果按照POS PHY3接口标准来说,必须保证寄存器建立(Setup)时间和CAM一次查找匹配时间之和小于1个周期10ns(一般情况下,FPGA设计中的保持(Hold Up)时间都可以满足,可

2. 举起：162)hold a meting 举行会议 | 163)hold up 举起 | 164)hurry up 赶快,快点

3. 阻挡：56.give first aid实施急救; | 57.hold up阻挡; | 58.come to恢复知觉;

1. 持械抢劫
    A hold-up is a situation in which someone is threatened with a weapon in order to make them hand over money or valuables.

2. 造成延搁的事物;阻碍;障碍
    A hold-up is something which causes a delay.

3. 交通阻塞
    A hold-up is the stopping or very slow movement of traffic, sometimes caused by an accident which happened earlier.

    e.g. They arrived late due to a motorway hold-up.
           他们因高速公路交通堵塞迟到了。