subtitle
noun uk/ˈsʌbˌtaɪ.təl/ us/ˈsʌbˌtaɪ.t̬əl/
[ C ]副标题，小标题
a word, phrase, or sentence that is used as the second part of a book title and is printed under the main title at the front of the book
subtitlesC1 [ plural ] （电影或电视节目的）字幕
words shown at the bottom of a film or television picture to explain what is being said
The Chinese movie was shown with English subtitles. 这部中国电影放映时配了英文字幕。
The evening news has subtitles for the deaf. 晚间新闻为聋哑人士配了字幕。