单词	light year
释义	English American light yearnoun [ C ] uk/ˈlaɪt ˌjɪər/us/ˈlaɪt ˌjɪr/ the distance that light travels in one year (about 9.5 million million kilometres) Thesaurus: synonyms and related words Years & yearly ad Anno Domini annual annually annus horribilis BCE bicentenary calendar year CE centenary date financial year fiscal year leap year New Year solar year year year end year's end yearly See more results » You can also find related words, phrases, and synonyms in the topics: Measurements in general Idiom(s) light years away light yearnoun [ C ] us/ˈlɑɪt ˌyɪər/ earth science the great distance that light travels in one year; about 5,880,000,000,000 miles or 9,460,000,000,000 kilometers earth science People sometimes say light years to talk about an extremely long distance or time: When I was a young man, being 50 seemed light years away.
随便看	run a risk run a test run a test (on sth) run a test on sth run a tight ship run a/the risk of doing sth run about run about after sb run about with sb run across sb run across someone/something run across sth run afoul of something run after sb run after sb/sth run after someone/something run after sth run against sb/sth run aground/ashore run along run along! run amok run amok run and run run around