in times of 后面跟的词通常比较抽象,而且时间上可以延续较久,可翻译为“在……中” e.g. in times of strife and turmoil在冲突和骚乱的年代 in times of difficulty在困难中 in times of trouble在困境中 in times of crisis在危机中 in times of danger在危险中
at the time of 后面跟的词通常比较具体,并且时间较短,是指完成某一动作的时间段或时间点,可翻译为“在……时” e.g. at the time of writing this book在编写本书时 at the time of sale在出售时 at the time of shipment在装运时 at the time of production在生产时