adj.不重要的，虚幻的，不大的，不坚固的，非真实的，非实体的

The allegations against him were insubstantial and lacked any concrete evidence.
对他的指控缺乏实质内容，没有具体证据支撑。
Despite the insubstantial meal, he felt surprisingly full.
尽管这顿饭不丰盛，他却意外地觉得饱了。
The argument presented was so insubstantial that it failed to convince anyone.
提出的论点如此空洞，未能说服任何人。
Her accusations were based on insubstantial rumors, which quickly dissipated when confronted with facts.
她的指控基于无实质的谣言，当面对事实时迅速消失。
The report was criticized for being insubstantial, offering only vague suggestions instead of clear recommendations.
该报告因缺乏实质内容而受到批评，只提供了模糊的建议而非明确的推荐。
His claims of expertise seemed insubstantial given his lack of practical experience.
考虑到他缺乏实践经验，他声称的专业知识显得站不住脚。
The evidence provided was insubstantial and could not hold up in court.
提供的证据缺乏分量，在法庭上站不住脚。
Despite the book's thickness, the content felt insubstantial and repetitive.
尽管这本书很厚，但内容感觉空洞且重复。
The opposition's case was insubstantial, relying more on emotions than facts.
反对派的案例缺乏实质内容，更多依赖于情感而非事实。
The company's promises of future growth were insubstantial, lacking specific plans or strategies.
公司对未来增长的承诺缺乏实质，没有具体的计划或策略。