该城市计划重新引入电车系统，以缓解交通拥堵问题。

The city plans the ___re-introduction of trams to ease traffic congestion.

那位演员在长期休息后，通过一场特别活动隆重地重新与粉丝见面。

The actor made a grand ___re-introduction to his fans after a long break through a special event.