00:23 acid (a.) sharp-tasting or sour
01:10 prodigal (a.) spending money or using resources recklessly and wastefully
02:55 exacerbate (v.) make worse
04:14 coalesce (v.) come together to form one mass or one thing
06:30 acuity (n.) sharpness of thought, vision
中文講解版請看:https://youtu.be/muKkOq9dVmk
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