collecting flask
noun [ C ] science specialized uk/kəˈlek.tɪŋ ˌflɑːsk/ us/kəˈlek.tɪŋ ˌflæsk/
一种平底的广口玻璃瓶(用于在科学实验中收集液体)
a wide glass container with a flat base, used in scientific work for collecting liquids
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