| 单词 | impenetrability |
| 释义 | impenetrability /im pen'i treuh bil"i tee, im'pen-/, n. 1. the state or quality of being impenetrable. 2. Physics. that property of matter by virtue of which two bodies cannot occupy the same space simultaneously. [1655-65; IMPENETR(ABLE) + -ABILITY] |
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