皮革受潮可变质。 Leather can deteriorate in damp conditions.
孩子问老师leather（皮革）是什么，老师说是：hide（皮），他问老师为什么让他hide（藏起来）。这个故事是用文字来开玩笑。 The boy asked his teacher what leather was and she said "Hide." He asked why she told him go hide. This story plays on words.
从动物我们得到像羊毛、丝、皮革、与毛皮这样的材料。 From animals we get such materials as wool, silk, leather and furs.
男学生问老师什么是皮革。她说“hide”。他问老师为什么叫他躲藏。这个故事用了双关语。 The boy asked his teacher what leather was and she said, "Hide". He asked why she told him to hide. The story plays on words.
塑胶有时可以替代皮革。 Plastic is sometimes used instead of leather.