| 词汇 | flat out | 
| 释义 | flat outflat out1.■尽快地, 全力以赴地The car was going flat out at 120 mph.那辆汽车以每小时120英里的速度急速行驶。I am working flat out to get this job finished by next week.我正在竭尽全力地工作, 想在下周完成这项任务。2.■精疲力竭, 疲惫的After running in the national games, she was flat out for a week.她参加全国运动会后一星期都疲惫不堪。 | 
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