a.

1. 純粹的，不攙雜的；道地的
   Is the cup made of pure gold?

   這隻杯子是純金做的嗎？

2. 純淨的；潔淨的；清澈的
   The air by the sea is pure and healthy.

   海邊的空氣清新又有益健康。

3. 純潔的，清白的；貞潔的
4. （顏色，聲音）純的；清亮的
5. 完全的，十足的[Z][B]
   It was pure luck that he was home when we called.

   非常幸運，我們打電話時他在家裡。

6. 純理論的；抽象的[B]

adj.

1. not mixed or adulterated with any other substance or material.
   ▸ (also pure-bred) (of an animal or plant) of unmixed origin or descent.
2. innocent or morally good.
3. (of a sound) perfectly in tune and with a clear tone.
4. (of a subject) theoretical rather than practical. Compare with applied.
5. complete; nothing but.
6. Phonetics  (of a vowel) not joined with another to form a diphthong.