例句與造句

1. The book provides, among other things, rules for interplanetary commerce and spaceship operation, travel, combat, and customization.
2. Though the influence of Edgar Rice Burroughs is apparent in Brackett's Mars stories, her Mars is set firmly in a world of interplanetary commerce and competition.
3. The Interplanetary Commerce Administration granted these sole rights to the RDA under the stipulation that the use of weapons of mass destruction of any kind are to be strictly prohibited.
4. It's difficult to find interplanetary commerce in a sentence. 用interplanetary commerce造句挺難的