Paleolithic describes the Old Stone Age — the very long time, thousands and thousands of years ago, when people made tools and weapons from stone, before farming. Archaeologists split the Stone Age into Paleolithic (the oldest, chipped stone), Mesolithic, and Neolithic (newer, with polished stone and farming). So a Paleolithic tool is a very old stone tool, and Paleolithic people hunted and gathered; they did not grow crops yet.

Paleolithic describes the Old Stone Agepaleolithic指的是舊石器時代 — the very long time, thousands and thousands of years ago也就是非常久遠以前, when people made tools and weapons from stone, before farming人類用石頭做工具和武器、還沒開始農耕的那段漫長時期。Archaeologists split the Stone Age into考古學家把石器時代分成 Paleolithic (the oldest, chipped stone), Mesolithic, and Neolithic (newer, with polished stone and farming)Paleolithic（最早，打製石器）、Mesolithic（中石器時代）和Neolithic（較晚，磨製石器加上農耕）。So a Paleolithic tool is a very old stone tool所以a Paleolithic tool就是非常古老的石器, and Paleolithic people hunted and gathered而Paleolithic people靠狩獵採集維生; they did not grow crops yet他們那時候還不種植作物。

It is a school and museum word, not everyday chat. People often capitalise it (Paleolithic) because it is the name of a period. American English usually writes paleo-; British English often writes palaeo- (Palaeolithic).

It is a school and museum word這是學校和博物館會用的詞, not everyday chat不是日常閒聊會出現的字。People often capitalise it (Paleolithic)大家常常把它的字首大寫（Paleolithic）, because it is the name of a period因為它是一個時代的名稱。American English usually writes paleo-美式英文通常寫paleo-; British English often writes palaeo- (Palaeolithic)英式英文常寫palaeo-（Palaeolithic）。