每日口說挑戰 為什麼智齒這麼討厭？ (Why Do Wisdom Teeth Suck?)

今日挑戰句子

to grind up food, which was especially handy before the advent of cooking around seven thousand years ago, back when our diet consisted of raw meat and plants that were fibrous and tough to chew.

用來磨碎食物在烹調之前特別有用，大約是在七千年前，以前我們的飲食是由生肉和植物組成，它們是纖維狀的，難以咀嚼。