单词 | bleach |
释义 | bleach (blēch) v. bleached, bleach·ing, bleach·es v.tr. 1. a. To remove the color from, as by means of chemical agents or sunlight: Over time, the exposure to sunlight bleached the rug in front of the window. b. To make white or colorless: Dawn bleached the mountains. 2. To whiten by causing the death or expulsion of algal symbionts from (coral). v.intr. 1. To act as or use a bleach. 2. To become white as a result of the loss of algal symbionts, usually following an environmental stress such as increased water temperature. Used of coral. n. 1. A chemical agent used for bleaching. 2. a. The act of bleaching. b. The degree of bleaching obtained. [Middle English blechen, from Old English blǣcan; see bhel-1 in the Appendix of Indo-European roots.] |
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