1. Percussion methods of fire-lighting date back to Paleolithic times, when some Stone Age tool-makers discovered that chipping flints produced sparks. 打击生火方法的日期要返回到旧石器时代，当一些石器时代工具生产者发现打火石碎片产生火花。
2. a type of primitive man who lived in Java in the Paleolithic Age. 在北京附近发现的原始人；和爪哇人类似。
3. They are all our Chinese ancestors dwelling in the Paleolithic age. 他们都是中华民族旧石器时代的祖先。
4. As early as in the Paleolithic Age 30, 000 years ago, human beings began to live here. 早在三万年前的旧石器时代，人类就在此繁衍生息。
5. This age can be natural age, physiology age, can be psychological age more. 这年龄可以是自然年龄、生理年龄，更可以是心理年龄。
