单词学习：folded 形容词/动词过去分词
folded
/ˈfoʊldɪd/
折叠的；折起的；合拢的
The map was neatly folded by Mr. Gu before he put it in his backpack.
地图被顾老师整齐地折叠好，然后放进了他的背包。
单词卡片
卡片已就绪
