laughv.发笑;笑;嘲笑n.笑声;笑;笑料
laughing-gasn.笑气;一氧化氮;氧化亚氮
laugh heartily放声大笑
laugh to tears笑出眼泪
Laughlen tests[医] 劳克林氏试验(检梅毒)
laugh at sb.笑话人
laughing faces笑脸
laugh in reply含笑作答
laugh out court付之一笑
laugh at danger对危险等闲视之.
laughing thrush笑鸫