Adventurelink inc. , altadena , calif. - provides a way to comparison shop for adventure trips .

adventurelinkinc.，加州阿尔塔迪纳：提供探险旅行的比较购买服务。

Balloons would be a cheaper way to solve the problem , says a team of engineers . Kristin gates of the global aerospace corporation in altadena , california , presented the idea on tuesday at the astrodynamics specialist conference in toronto , canada .

气球是解决问题的一个便宜方法，一组工程师之中一人说道，加利福利洲阿尔塔迪纳全球航空航天公司克里斯廷茨周二在加拿大多伦多航空动力学专家会上说道。