But to take a balloon flight in a wheelchair is extremely difficult.

但是，要坐轮椅乘热气球飞行，却是相当困难的一件事。

Larry fulfilled his dream, and set a record for a gas-filled balloon flight.

拉里实现了梦想，而且创造了一项以充气气球飞行的记录。

His article for National Geographic details the challenges he undertook to achieve the longest manned balloon flight.

他为国家地理杂志撰写的文章。详细披露此次历史上飞行时间最长的载人气球遇到的种种艰难险阻。

In 2005, ENG group sponsored one hot balloon flight activity named "Fly to the Top of World – Hot Balloon Journey to North Pole";

2005年，ENG集团赞助了一个名为“飞向世界之颠—— 热气球北极之旅”的热气球航行活动；

Objective:To investigate the effect of high altitude balloon flight test on the antioxidation of water extracts from Celosia cristata L.

目的：探讨高空气球飞行实验对鸡冠花抗氧化功能的影响。