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C267 · 复杂句（76 课）
Sugar is a solid carbohydrate which is always used to sweete
Course 267
(难)Sugar is a solid carbohydrate which is always used to sweeten food.
1 句 · 父母与孩子分角色配音
旁白 neutral
Sugar is a solid carbohydrate which is always used to sweeten food
糖是一种固体碳水化合物，常被用来给食物增添甜味
