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-现代词典

单词	free balloon
释义	free balloon noun : a balloon which can be made to ascend by the use of ballast and to descend by the release of gas but which cannot be guided in flight
随便看	phthalin phthalo phthalo- phthalocyanine phthalocyanine phthalocyanine blue phthalocyanine blue B phthalocyanine blue G phthalocyanine green phthalocyanine green G phthalogen phthalogen brilliant blue IF3G phthalonitrile phthaloyl phthalylsulfathiazole phthartolatrae phthiocol phthioic phthioic acid phthiracaridae phthiriasis phthirius phthirophagous phthirus phthisic

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