单词：pectins
[化] 果胶
n. any of various water-soluble colloidal carbohydrates that occur in ripe fruit and vegetables; used in making fruit jellies and jams
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I'm going to clean the blackboard. But you can't do that. Why can't I? We haven't got a duster. Did you walk to the match? No. I went by car. Did John go by car, too? No. He cycled. Hello, and how did you spend the holiday? I played tennis till lunch
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