When you go to a new school it takes a while to know the ropes.
到一所学校读书要花一段时间熟悉情况。
Kept waving to her mother until the train was out of sight.
不断地冲她的母亲挥手,直到火车驶出了视线。
Twenty or thirty pages of information handed to any of the major world powers around the year 1925 would have been sufficient to change the course of world history.