单词	Galton whistle
释义	Galton whistle noun : a whistle of variable high pitch used to test the upper limit of audibility Word History Etymology after Sir Francis Galton, its inventor
随便看	lemongrasses lemonier lemoniest lemoning lemonish lemonlike lemons aisling aislingi aislings Aisne Aissawa aissawa Aissor aissors aistopod Aistopoda ait aitch aitchbone aitchbones aitches aiten aith aithochroi

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