最近的一次是在2003年，失败的原因是气球在升空之前破掉了。
The most recent attempt, in 2003, failed when his balloon ruptured before takeoff.
一只在南极洲升空的高空气球解答了宇宙学的一个最大问题：我们的宇宙是“平的”。
A high-flying balloon which soared over Antarctica may have answered one of cosmology's greatest questions by revealing that the universe may be "flat".
气球升空后，实验性地通过输送管在空气中喷洒水，为估计在更高气层中喷洒其他物质的可能性。
The idea was to pump a small amount of water up to the balloon and thence out into the air, so as to assess the possibility of spraying out other substances at far greater heights.
一只气球飞艇能收在吉普车的后箱中，等行驶到合适的地点后，安装升空只需几小时，收下来则更快捷。
A blimp can be stored in the back of a jeep, driven to a suitable location, launched in a couple of hours and winched down again even faster.
警方昨天搜索了海尼在科罗拉多州的家，这一家人称，他们巨大的热气球周四悄然升空。
Police searched the Colorado home of the Heenes yesterday, and the family claimed their giant weather balloon got loose on Thursday.
当充氢气而压力适当，气球将冲出容器升空，造成一种欢快热闹的气氛。
The balloon rushes out the container when be inflated with hydrogen with proper pressure, thereby creating am atmosphere with happy and jollification.
在美国，一个自制的氦气球意外升空，据报道，上面还有一个6岁的小男孩。随后，这个气球飞越科罗拉多的乡村之后在一个田野着陆。
A homemade helium balloon that broke free of its moorings in the United States, reportedly with a 6-year-old boy inside, has landed in a field after a flight across the Colorado countryside.
科罗拉多州因制造男童随热气球升空骗局而被起诉的父亲的绿盛称，官方指控和案件将在下周上交。
A lawyer for a Colorado father accused of carrying out a bizarre hoax involving his son in a huge balloon says official charges and the case could be filed next week.
热气球里的空气要热成啥样才能升空一头大象？
How hot does the air have to be in a hot air balloon if I wanted to use it to lift an elephant?
热气球里的空气要热成啥样才能升空一头大象？
How hot does the air have to be in a hot air balloon if I wanted to use it to lift an elephant?
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