1. 形容詞
   感覺不到的
   不能感知的, 覺察不到的
   微細的, 微妙的
   

   同義字詞
   impalpable,inappreciable,indistinguishable,insensible
   

例句

1. It should be almost imperceptible ).
2. If he breathed it was imperceptible .
3. Very small currents can be imperceptible .
4. Its effects are gradual – almost imperceptible .
5. Slight variations, then, are almost imperceptible .
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