| 单词 | insubstantial | 
| 释义 | insubstantial  (ɪnsəbstænʃəl  ) adjective Something that is insubstantial is not large, solid, or strong.   Mars has an insubstantial atmosphere, consisting almost entirely of carbon dioxide.    Her limbs were insubstantial, almost transparent.   Synonyms:  flimsy, thin, weak, slight    | 
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