The study's authors dredged for detailed data on sales and purchases (from transaction ledgers) and on rents and maintenance costs (from rent books) over the period from 1901 to 1983.

该研究的作者挖掘了1901年至1983年期间的销售和购买记录(来自交易账簿)以及租金和维护成本(来自租金账簿)的详细数据。

So I was trying to dredge my mind for my favourite personal anecdotes and it didn't happen to me, but it happened to a man I was in a taxi with.

所以我试图为我最喜欢的个人轶事挖掘我的想法， 但它并没有发生在我身上，而是发生在一个和我一起乘坐出租车的男人身上。