| 单词 | 难以觉察 |
| 释义 | 〔imperceptible〕an imperceptible drop in temperature.难以觉察的气温下降〔inappreciable〕Too small to be noticed or make a significant difference; negligible:微不足道的, 毫无价值的：太小因而难以觉察或造不成显著差异的；可忽略的：〔indistinguishable〕Impossible to discern; imperceptible:不易察觉的：不可能识别的；难以觉察的：〔insensible〕Imperceptible; inappreciable:感觉不到的；难以觉察的：〔subliminal〕Inadequate to produce conscious awareness but able to evoke a response:下意识的，潜意识的：微小利润难以觉察的：〔insensible〕an insensible change in temperature.难以觉察的温度变化 |
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