| 单词 | dark reaction |
| 释义 | dark /därk/adjective
In a state of dark ORIGIN: OE deorc darkˈen transitive verb
To grow dark or darker darkˈey, darkˈie noun see darky below darkˈish adjective darkˈle intransitive verb (literary) To grow dark (a back-formation from darkling) darkˈling adverb and adjective
darkˈlings adverb (poetic) In the dark darkˈly adverb darkˈness noun darkˈsome adjective
darkˈy noun
dark adaptation noun The automatic adjustment of the eye to enable it to continue to see in reduced light darkˈ-adaptˈed adjective Dark Ages plural noun The period of European history from the 5c to the 9c or 12c (or 15c), once considered to be a time of intellectual darkness Dark Continent noun (old) Africa dark current noun (image technol and physics) Residual current in a photoelectric cell, video camera tube, etc, when there is no incident illumination dark energy noun A hypothetical form of energy believed to be responsible for the continuous expansion of the universe darkfield microscope noun An ultramicroscope dark glasses plural noun Sunglasses dark-ground illumination noun (biology) A method for the microscopic examination of living material by scattered light, specimens appearing luminous against a dark background (cf bright-field illumination) dark horse noun
darkˈ-house noun (Shakespeare) A mad-house dark lantern noun A lantern whose light can be covered darkling beetle noun Any dark-coloured beetle of the Tenebrionidae darkˈmans noun (criminal sl) Night dark matter noun Undetectable but influential matter, possibly in the form of neutrinos, making up a large proportion of the mass of the universe dark meat noun The darker meat from the legs, etc of poultry (cf white meat) darkˈnet noun (computing) A private network of computer users within which file sharing (qv under file1) takes place dark reaction noun The second phase of photosynthesis, which needs no light darkˈroom noun A room for developing and printing photographs free from such light as would affect photographic plates dark star noun A star that emits no visible light, and can be detected only by its radiowaves, gravitational effect, etc dark web noun Deep web (qv under deep ) darken someone's door (often with neg, often implying unwelcomeness) to appear as a visitor in the dark Ignorant, unaware keep dark To be silent or secret keep it dark To conceal something prince of darkness Satan |
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