单词	liftoff
释义	liftoff noun lift·​off ˈlift-ˌȯf  : a vertical takeoff by an aircraft or a rocket vehicle or missile Synonyms blastoff launch takeoff See all Synonyms & Antonyms Example Sentences a series of successful liftoffs Thousand of spectators gathered to watch the liftoff of the space shuttle. Recent Examples on the Web Agency officials confirmed Monday that repairs are still underway to address hydrogen fuel leaks in the uncrewed Space Launch System rocket that thwarted two previous liftoff attempts. Denise Chow, NBC News, 13 Sep. 2022 Whatever the rationale, a triumphant return to the moon can only begin in one place: on the launchpad, with a successful liftoff of a rocket. Marina Koren, The Atlantic, 6 Sep. 2022 In the last few seconds, hydrogen will burn off, the four RS-25 engines will start, resulting in booster ignition and liftoff at T minus zero. Ashley Strickland, CNN, 2 Sep. 2022 Officials Tuesday evening said teams are prepping for a 2:17 p.m. EDT Saturday, Sept. 3, liftoff of the Space Launch System rocket and Orion capsule. Emre Kelly, USA TODAY, 30 Aug. 2022 Regardless of all the technical snags, thunderstorms ultimately would have prevented a liftoff. Marcia Dunn, The Christian Science Monitor, 29 Aug. 2022 If viewers awake to find fueling began as planned earlier Monday morning, there’s a shot at on-time liftoff. Lee Roop | Lroop@al.com, al, 29 Aug. 2022 Regardless of all the technical snags, thunderstorms ultimately would have prevented a liftoff. Marcia Dunn, Anchorage Daily News, 29 Aug. 2022 Even if liftoff and landing usually take only about 65 seconds, a margin of error is needed in case of emergencies. Jon Sindreu, WSJ, 25 Aug. 2022 See More Word History First Known Use circa 1956, in the meaning defined above Kids Definition liftoff noun lift·​off ˈlift-ˌȯf  : a vertical takeoff (as by a rocket) liftoff noun as in takeoff a rising from a surface at the start of a flight (as of a rocket) everyone was quiet in the control room as they waited for lift-off Synonyms & Similar Words Relevance takeoff launch blastoff ascent Antonyms & Near Antonyms landing crash splashdown
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