Ketene
n. [化] 乙烯酮, 烯酮
🗣️ 情景例句
Well, we'll phone every hour,
好了， 我们每个小时都打电话
What's the rush?
什么事那么匆忙？
Past experience has taught us that certain accomplishments are beyond attainment.
以往的经验告诉我们有些事是办不到的。