| 词汇 | umbra |
| 释义 | umbra noun [ C or U ] physics specialized uk/ˈʌm.brə/ us/ˈʌm.brə/ umbras or umbrae 荫;阴影;（尤指日食发生时的）本影，暗影 the dark inner part of a shadow in which all light is blocked, used especially about a shadow made during an eclipse Compare: penumbra |
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