英语翻译For long-time efficiency and happiness it is best to observe the principles of health and sound working conditions.

英语翻译_____ for a long time 英语翻译they had been going out for a long time for long time for long weeks for long hours for long daysfor long time for long weeks for long hours for long days有什么区别. Long time no see 英语翻译 英语翻译Long time no see. we work for a long time.for? 是不是只有for a long time,没有for long time和for long times? for long与for a long time的区别 英语翻译是long,long time ago还是long,long time before还是long,long time later哪个? 英语翻译Movies about mickey mouse have been popular almost everywhere for a long,long time.请翻译这段文字 英语翻译如果用I think I have gone insane for a long time!有没有错误? 英语翻译翻译One should examine oneself for a very long time before thinking of condemning others. we waited a long time for the bus为什么是a long time 而不是long time the long time i waiting for you a long time we work for a long time. He_________(work) there for a long time It's raining for a long time? Has it beensnowing for a long time?