non-defining
US /ˌnɑːn dɪˈfaɪnɪŋ/
UK /ˌnɑːn dɪˈfaɪnɪŋ/

形容词
1.
非限定性的
a non-defining relative clause gives extra information about the noun or pronoun it refers to, but is not essential to the meaning of the sentence. It is usually separated by commas.
示例:
•
My brother, who lives in London, is a doctor.
我哥哥,住在伦敦的那个,是一名医生。
•
The book, which was published last year, became a bestseller.
这本书,去年出版的,成了畅销书。
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