"sign" 的定义和意义

a perceptible indication of something not immediately apparent (as a visible clue that something has happened)

a text or symbol that is displayed in public to give instructions, warnings, or information

any nonverbal action or gesture that encodes a message

structure displaying a board on which advertisements can be posted

(astrology) one of the twelve signs each with specific names such as Aries, Taurus, etc. that exists on a circular chart called the zodiac, used to identify a person based on their date of birth

a gesture that is part of a sign language

an event that is experienced as indicating important things to come

having an indicated pole (as the distinction between positive and negative electric charges)

a unit or entity that carries meaning and represents a concept, idea, or object, often through a system of arbitrary associations between the signifier and the signified

(mathematics) the property of being positive or negative in any number other than zero

to use hand movements, facial expressions, or body language to communicate messages

to make the sign of the cross as a symbol of blessing or protection

to use markers or signposts to show the way or provide information about a location