mother ship
noun
1- a large spacecraft or ship from which smaller craft are launched or maintained航天运载飞船; 母舰（船）。
1.1
- a place regarded as a base, source, or headquarters基地; 源头; 总部：
the Battersea Art Centre, the mother ship of experimental theatre.
巴特西艺术中心, 实验戏剧的发源地。