Tā de lùnwén liánpiānlěidú, què méi jǐ jù yǒuyòng dehuà.
His thesis was long-winded but said little of value.
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From 《隋书·李谔传》: 连篇累牍，不出月露之形 — criticizing writers who fill endless scrolls with empty flourishes about moon and dew. 牍 refers to the wooden strips used for writing before paper.
