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機器人：你知道利用下面哪一種液體在圖畫紙上寫字，就可以讓圖畫紙上的字跡隱形嗎？ A、檸檬汁 B、蜂蜜水 C、食鹽水 答案是A，你答對了嗎？我們來看影片的解說。
#科學 #能源 #氣候 #科技 #自然
分級:
片長:
發音:
發行:
導演:
分級: 普遍級
片長: 1 min
發音: 華語
發行: 2018-01
導演: 安偉民
片長: 22 min
發音: 英語
發行: 2019-04
導演: 史提夫斯潘格勒 主持
片長: 46 min
發行: 2014-12
導演: 臺灣電視公司
片長: 24 min
發行: 2015-06
導演: 翰星傳播製作
片長: 21 min
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