New technologies often fail to displace old ones .
新技术常常无法替代旧的技术。
High-speed lines , like other regeneration projects , often displace economic activity rather than create it .
像其他一些次时代的高速路线比起带动经济活跃反而更像是替代了它。
Republicans should help us develop symbols for its celebration . They may not immediately displace the royal symbols but , in time , people will come to love them more .