多年来他坚持每天工作不超过八个小时，甚至每天都会午睡20分钟。
For many years he has insisted on working no more than eight hours a day and he even has a 20-minute nap on weekdays.
他一再坚持，他不想通用的八个品牌受损。
He has repeatedly insisted that he has no intention of scuttling any more of GM's eight surviving car brands.
它是一个有证可循，无药物治疗的短期疗法（通常为四到八个疗程）。 它坚持在长期失眠是由一系列生理和行为因素导致的。
It is an evidence-based, nondrug, short-term (usually four to eightsessions) therapy based on the concept that chronic insomnia is maintained by anumber of physical and behavioral factors.
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