空泛用英语怎么说？

空泛

例句

• The play was amusing, but it was little more than froth. 这出戏还算有趣, 不过内容有些空泛。
• Theories deviating practices are inane , while practices deviating theories are blindfold. 脱离实践的理论是空泛的, 脱离理论指导的实践是盲目的.
• Speakers at the rally mouthed sentiments of unity... 集会上的发言人空泛地呼吁大家要团结一致。