penumbra是什么意思 penumbra的用法 penumbra怎么读

penumbra

英 [pɪ'nʌmbrə]美 [pɪ'nʌmbrə]

n. 半影

星级词汇:★

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记忆方法

1、pen- + umbr- + -a.
2、含义：partial shadow outside the complete shadow of an eclipse.

中文词源

penumbra 半影

来自拉丁语paene,几乎，接近，umbra,阴影，全影，词源同umbrella.

英语词源

penumbra

penumbra: see umbrage

penumbra (n.)

1660s, from Modern Latin penumbra "partial shadow outside the complete shadow of an eclipse," coined 1604 by Kepler from Latin pæne "almost" + umbra "shadow" (see umbrage). Related: Penumbral.

权威例句

1. The First Amendment has a penumbra where privacy is protected from governmental intrusion.

第一修正案在个人隐私不受政府侵犯方面较为模糊.

2. This includes the continuous survey of umbra and penumbra of the sunspot.

这包括对太阳黑子本影和半影持续的观测.

3. A penumbra of doubt surrounds the incident.

疑惑的阴影笼罩着该事件((真相不明)).

4. In additional, the luminance step is applied to detect the penumbra.

另外, 提出了亮度步长的方法来检测阴影中的半影.

来自互联网

5. Traditionally, the word wangliang has three different meanings penumbra and elf.

“罔两”一词历来向有“无据依”、“景外微阴”及“精怪”三义.

来自互联网

[ penumbra 造句 ]