求翻译：第三，连续剧通常包括笑曲目。笑轨道，也称为笑声原声带，笑声轨道、 LFN （不知从 1aughter)、 罐头的笑声或大笑的听众们，是插入到大多数情景喜剧不录制现场观众面前录音的效果。笑轨道一般在帖子中添加 — — 生产--那就是，编辑后放映期间录制。笑轨道具有用工作室观众一样的效果。为了告诉听众时笑的时候。是什么意思？

Third, dramas usually include laugh tracks. Laugh track, also known as the laughter soundtrack, The laughter track lfn (I do not know from 1aughter), canned laughter or laughter of the audience, is inserted into most sitcom is not recorded before a live audience recording results. The laugh track ge

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Third, the series generally include laugh tracks. Laugh tracks, also known as laughter soundtrack, laughter track, LFN