还有几次事故主要是起飞时引擎出现故障造成的。There were also several accidents mainly caused by engine failures on take-off.我搭乘的联运航班又过了6个小时才起飞。My connecting plane didn't depart for another six hours.原定的发射在点火起飞前4分钟被取消。The original planned ...
研讨会内容是以普通听众容易理解为依据作出选择的。Seminar topics are chosen for their accessibility to a general audience.和多数研讨会一样，这些研讨会也比较松散随意。As seminars go, these are loose, unstructured affairs.研讨会不收会务费，而且还提供午餐。The seminars are free, with lun...