He would stay for hours at a stretch in the laboratory.他在实验室里一蹲就是好几个小时.Can you work ( for ) six hours at a stretch?你能连续工作六小时 吗 ?Today I really swam to my heart's content . I did 3,000 metres at a stretch.今天我一口气游了三千米...
这个城市的人口由于黑死病而减少了.The population of the city was thinned out by the black death.五百年前,黑死病几乎消灭了岛上所有的人.Five hundred years ago the plague almost wiped out the population of the island.不幸的是, 那些老鼠身上的跳蚤携带着一种被称为“黑死病”的疾病.Unfortuna...