英语词汇“free balloon”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	free balloon
释义	WordReference Random House Unabridged Dictionary of American English © 2024 free′ balloon′, Aeronautics, Sporta balloon, often equipped to carry passengers, that drifts with air currents and whose ascent and descent are controlled by the release of ballast and buoyant gas. free′ balloon′ing.
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