back in the saddle字面意思是重上马鞍，引申为重整旗鼓；重披战袍。

【例句】
The line from corporate communications is that Turner is back in the saddle.
公司传达的消息是，特纳重新掌权。

After my leg heals, it will be nice to be back in the saddle again . I miss playing tennis every Tuesday with Amie and Todd.
我的腿伤好了以后就要卷土重来。这一阵不跟爱米和陶德打网球，真不好受。