这种回应除了表达非常基本的想法，一般都缺乏实质内容。
The response generally lacks substance beyond expression of very basic ideas.
这篇文章缺乏实质性的内容。
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。
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".
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