切勿讲不雅的故事.Never tell stories that are not decent , ie that are obscene.用餐时摆弄刀叉玩儿是不雅的.It's bad manners to fidget about at the table.他的不雅的吃相使她很尴尬.His bad table manners embarrassed her....

“不雅的”的英语可以翻译为：indelicate，ungenteel ...