A symbol, or representation of an idea.

标帜；徽章；象征。

Emblem and symbol are often used interchangeably as figurative representations of ideas.

emblem 及 symbol 两字用作思想之表征时可以通用。

An emblem is a device or object representing an idea by natural fitness or association.

emblem 是指某种图案或物品因自然上的相配或联想而用来表示某种观念：

Symbol may be a conventional representation agreed upon with or without natural fitness.

Symbol 则是一种因袭而来的表征，其形式和代表物之间不一定有自然相配的关系：

The word, symbol, suggests a deeper meaning than emblem.

此字(symbol)较 emblem 有更深一层之意义：

A token is something used as a reminder or guarantee.

Token 特指为纪念用或保证用之物品：

Sign is the most general of these terms, and is often used interchangeably with any one of them; a sign may be a gesture or other significant movement.

Sign 一字的指涉最为广泛，可用来替代上列各字。

Sign 亦指手势，或其他有含义之举动：

It may also indicate the existence or approach of something.

此字亦指某事存在之迹象或未来事之预兆：