interplanetary

1.interplanetary navigation

际导航

2.interplanetary missions.

际飞行任务。

3.an interplanetary journey in a space ship

乘太空船作际旅行

4.3) Some people have reported seeing more semivolatile elements in a class of interplanetary dust particles (IDPs) called “chondritic porous” IDPs.

曾有人报告在一类被称作“多孔球粒陨石”的行颗粒（IDPs）中见到了较多的半挥发性元素。