宇航员乘坐小型航天舱往返于母舰和月球基地之间。

The astronauts traveled between the mothership and the lunar base in a ___shuttlepod.

机场的穿梭巴士每15分钟一班，方便乘客往返航站楼。

The airport ___shuttle pods run every 15 minutes to transport passengers between terminals.