A small reaction tube with some frowning eyes filled with a pink liquid.<br/>反應管<br/>anthropomorphism、biochemistry、biology、chemistry、equipment、lab、laboratory、science、tube<br/>擬人論、生物化學、生物學、化學、設備、實驗室、實驗室、科學、管<br/>資料來源：openclipart ( https://openclipart.org/ )