telly

Compared meaning: a television, the device or medium (noun).

比较义项：电视（电视机／电视媒介）（名词）。

• television

  Neutral, standard word for the device or medium; appropriate in both formal and informal, spoken and written English.

  中性、标准的说法，指电视机或电视这一媒介；正式与非正式、口语与书面语中都可以使用。

  She turned on the television to watch the evening news.

  她打开电视看晚间新闻。

• telly 本词

  Informal British slang for television, used mainly in casual spoken British English; it would sound out of place in formal writing.

  非正式的英式俚语，表示电视，主要用于英式英语的日常口语中；用在正式书面语里会显得不合适。

  Fancy staying in and watching telly tonight instead of going out?

  今晚要不要待在家里看看电视，不出门了？

Television and telly mean the same thing: a TV, the device or the medium. Television is neutral and standard, fine in both formal and informal English. Telly is informal British slang, used mainly in casual spoken British English; it would sound wrong in formal writing.

television 和 telly 在“电视”这个意义上词义相同，但语域不同：television 是中性、通用的说法，正式和非正式场合都能用；telly 是英式英语中非正式、口语化的说法，多见于日常聊天，正式书面语中会显得不合适。