If you say that something such as an idea or suggestion is laughable, you mean that it is so stupid as to be funny and not worth serious consideration.
例句
The idea that TV shows like 'Dallas' or 'Dynasty' represent typical American life is laughable...说《豪门恩怨》或《锦绣豪门》等电视剧是美国人生活的典型写照是很滑稽的。He has denied suggestions that he hates all English people, claiming the allegations are 'laughable'.他矢口否认那些有关他憎恨所有英国人的推测，声称这些指控是“荒唐的”。
英汉词典释义
adj.
荒唐可笑的;有趣的;逗人笑的
The play was a tragedy, but the acting was laughable.戏是悲剧,可是演得却令人发笑。
英英词典释义
Adjective
1. completely devoid of wisdom or good sense;
"the absurd excuse that the dog ate his homework""that's a cockeyed idea""ask a nonsensical question and get a nonsensical answer""a contribution so small as to be laughable""it is ludicrous to call a cottage a mansion""a preposterous attempt to turn back the pages of history""her conceited assumption of universal interest in her rather dull children was ridiculous"
2. arousing or provoking laughter;
"an amusing film with a steady stream of pranks and pratfalls""an amusing fellow""a comic hat""a comical look of surprise""funny stories that made everybody laugh""a very funny writer""it would have been laughable if it hadn't hurt so much""a mirthful experience""risible courtroom antics"