他在公共场合发表下流言论，实在有伤风化。

His ___indecent remarks in public were truly offensive.

在如此严肃的会议上开这种玩笑很不合时宜。

Making such jokes during such a serious meeting is completely ___indecent.

他的黄色笑话在正式场合显得很不雅。

His ___indecent jokes were inappropriate for the formal occasion.