| 单词 | lethargy |
| 释义 | lethargy [`leth·ǝr·jē] MEDICINE A morbid condition of drowsiness or stupor; mental torpor. NUCLEONICS A measure of the energy which has been lost by a neutron, equal to the natural logarithm of the ratio of the initial energy of a neutron to its energy at any given point in the slowing-down process. |
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