Article
動物的壽命 - The lives of animals

Subject matters: 新知 - new knowledge,
Language level: Baihua

Keywords: animals,

Persons:
幼雄 Youxiong (Author)

---

Article
新式的盲杖 - A new style cane for use by the blind

Subject matters: 新聞 - news, 新知 - new knowledge,
Language level: Baihua

Keywords: general knowledge, invention,

---

Image
新式的盲杖 -