Sign与Signal的英汉用法辨析及翻译策略：
一、核心语义差异
1. Sign（n.）
-- 静态标识：交通标志（traffic sign）、商店招牌（store sign）
-- 自然迹象：vital signs（生命体征）、signs of rain（下雨征兆）
-- 数学符号：plus sign（加号）
-- 手势语言：sign languag ...(以上内容有节略,please sign in for more)
word-vs-word-cn
Sign, 【signal】 can both mean a motion, an action, a gesture, or a word by which a command or wish is expressed or a thought is made known.
Sign (see also 【SIGN 】 1 ) ( CHARACTER 1 ) is the general term that in itself carries no explicit connotations; it is used in reference to a bodily motion (as a shrug) or a gesture (as a beckoning) or an action (as a pantomime) by which one conveys a thought, a command, a direction, or a need to another with whom one either cannot communicate orally (as by reason of deaf-mutism, or lack of a common language, or distance) or does not wish to communicate orally (as from consideration of others or desire for secrecy).
【Signal】 usually applies to a conventional and recognizable 【sign 】 that typically conveys a command, a direction, or a warning.
【Signal】 is also applied to mechanical devices which by operating lights, moving barriers, or sounding an alarm, take the place of a guard, a watchman, or a policeman.
