ex·i·gu·ity /ˌɛgzɪˈgjuəti/
  些須,微小
  Ex·i·gu·i·ty n.  Scantiness; smallness; thinness. [R.]
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  exiguity
       n : the quality of being meager; "an exiguity of cloth that
           would only allow of miniature capes"-George Eliot [syn: meagerness,
            meagreness, poorness, scantiness, scantness]