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历史：
artificial
adjective
1
  ×: There are two artificial lakes - one for swimming and one for fishing.
  √: There are two man-made lakes - one for swimming and one for fishing.
  ×: The city has suffered both natural and artificial disasters.
  √: The city has suffered both natural and man-made disasters.
     • • •
artificial = not made of natural materials: 'I still prefer sugar to all those artificial sweeteners.' 'Most people look better under artificial light.'
man-made = made or caused by people, although sometimes having a natural appearance: 'This canal is the longest man-made waterway in the world.' 'It's hard to believe that these enormous caves are actually man-made.'
2
  ×: He managed to lose weight by eating artificial diet foods.
  √: He managed to lose weight by eating synthetic diet foods.
  ×: I am worried about taking artificial products into the body.
  √: I am worried about taking synthetic products into the body.
  ×: I never eat artificial foods.
  √: I never eat synthetic foods/food substitutes.
     • • •
synthetic = not natural but made by a chemical process: 'Many old herbal remedies have been replaced by synthetic drugs.'

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