A politician has to address the public yet avoid offending people, so it helps to keep public statements vague and free of detail - lacking in "substance".

一个政客必须向公众发表演说，但又要避免冒犯公众，因此，使演说词一直比较模糊、没有细节——也就是说缺乏“实质”，则对政客有帮助。

youdao

It replaces the natural substance dopamine, which is lacking in Parkinson's disease patients.

它取代了帕金森患者缺少的天然多巴胺。

youdao

Current assets such as receivable or prepaid rent are not included in the intangible classificatoryion, even though they are lacking in physical substance.

应收账款或预付租金等流动资产不包括在无形资产类别中，即使它们也没有实物形态。

youdao

The speech tomorrow -- you'll probably come back and ask me why it was so heavy on substance and lacking in politics.

WHITEHOUSE: Press Briefing