宇航员们乘坐小型航天飞机将补给物资从轨道站运回地球。

The astronauts used the ___shuttlecraft to transport supplies from the space station back to Earth.

宇航员们乘坐穿梭艇在空间站和母舰之间往返。

The astronauts traveled between the space station and the mothership in a ___shuttlecraft.