Question

-ar

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-ar / ə ; ə /
◙suffix
1. [in adjectives] relating to something
• 与…有关的:
 »stellar (=relating to stars)
  星（球）的
 »polar (=relating to the North or South Pole)
  极地的
2. [in nouns] someone who does something
• 做某事的人:
 »a liar (=someone who lies)
  说谎的人