spec. The hydrogen, helium, or other light gas used to fill and give buoyancy to a balloon or airship. Also figurative, esp. in early use.
| 单词 | θ207987 |
| 释义 | society > travel > air or space travel > a means of conveyance through the air > balloons and airships > [noun] > gas or air container of balloon or airship > gas (1) gas1784 spec. The hydrogen, helium, or other light gas used to fill and give buoyancy to a balloon or airship. Also figurative, esp. in early use. |
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