I volunteered for the space program for the thrill of adventure.
我志愿参加了空间项目，因为我喜欢冒险所带来的兴奋。
2
The future of space tourism may be uncertain, but history suggests that some kind of adventurespace travel is nearly inevitable.
空间旅游业的未来也许充满变数，但历史告诉我们飞向外层空间的冒险几乎不可避免。
3
Though SpaceAdventure clients pay a fortune for their trip, there's no guarantee they'll actually make it. The slightest ailment could scuttle their plans.