With the rapid development of science and technology in the past few years, children today find it difficult to conceive how people lived in the past. How did people in ancient times cook without gas ovens, keep out the rain without raincoats, measure humidity, or tell the direction without a compass?
一日千里的科技文明，為人類創造了愈來愈便利與舒適的生活環境，人們也就在豐裕的物質享用中，漸漸無法想像前人親近自然、征服自然與運用自然的生活方式。