每日口說挑戰 百萬美元的想法 Million Dollar Ideas! Do You Have One?

今日挑戰句子

So he went to his lab, played around with bacteria and came up with a unique invention that magically solves the problem.

於是他去實驗室亂搞細菌，並想出了一個特殊的發明，而它神奇地解決了口臭問題。