"good clean fun" "a clean joke"
"it was an innocuous remark" "confined himself to innocuous generalities" "unobjectionable behavior"
"the ends are unobjectionable; it's the means that one can't accept"
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)