acid·u·lous /əˈsɪʤələs/
  (a.)多少帶酸味的,不和悅的,尖刻的
  acid·u·lous /əˈsɪʤələs/ 形容詞
  微酸的,有酸味的
  A·cid·u·lous a.  Slightly sour; sub-acid; sourish; as, an acidulous tincture.
  Acidulous mineral waters, such as contain carbonic anhydride.
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  acidulous
       adj : tasting sour like acid [syn: acidic, acidulent]