A word may have several different senses and several words may have the same sense.
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All the words in a language can be used to refer , but only some have sense.
A. 对
B. 错
There are very few perfect synonyms in a language.
A. 对
B. 错
Dry and wet are a pair of gradable antonyms.
A. 对
B. 错
The reference theory is not suitable for a. prep. and conj.
A. 对
B. 错
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