这个水库是通过在布莱斯河上筑坝形成的。This reservoir was formed by damming the River Blith.我举双手赞成拦河筑坝.I'll raise both hands in favour of damming the river.他们筑坝来防洪水.They dammed the water to control flooding....
溃疡已经折磨她好几年了。The ulcer had been troubling her for several years.“那是因为我得了溃疡，”他补充解释说。"It's my ulcer," he added by way of explanation.一种细菌被断定为造成他十二指肠溃疡的根源.A bacterium is identified as the cause for his duodenal ulcer....