But you called him in to attend on Fred, and I am sure that was a mercy, said Mrs. Bulstrode, losing her clew in the intricacies of the subject. 乔治·艾略特.米德尔马契.
He became thoroughly familiar with the intricacies of fire-box, boiler, valves, levers, and gears, and liked nothing better than to handle the locomotive himself during the run. 弗兰克·刘易斯·戴尔.爱迪生的生平和发明.