石蕊
shí​ruǐ

litmus

  • created sense approved 石蕊 · shí​ruǐ · litmus

    石蕊

    shí​ruǐ

    litmus

    A coloring matter extracted from lichens, used in chemistry as an acid-base indicator.

    我们将蓝色石蕊试纸浸入酸性溶液中，它会变红。

    noun

    created sense

  • created sense approved 石蕊 · shí​ruǐ · reindeer moss

    石蕊

    shí​ruǐ

    reindeer moss

    A type of fruticose lichen commonly found in arctic and alpine regions, serving as food for reindeer.

    石蕊是北极圈内驯鹿在冬天的主要食粮。

    noun

    created sense