You have to stand 6 hours at a stretch for this job.

这个工作需要连续站6小时。

Often he could work for no more than twenty minutes at a stretch, sometimes not that.

他常常只能连续工作不超过二十分钟，有时甚至更短。

I go to a stretching class at the center.

我在社区中心上健身课的时候。

Crew members work very hard, often seven 12-hour days a week for months at a stretch, far from their homes and families.

船员们工作非常努力，通常连续几个月每周工作 7 天，每天工作 12 小时，远离家园和家人。

I find I must do this careful editing in short runs, no more than 15 or 20 minutes at a stretch, or I become too kind with myself.

我发现我必须在短期内进行这种仔细的编辑，一次不超过 15 或 20 分钟，否则我会变得对自己太友善了。

Three times he walked past the door; then, his heart pounding with excitement, he opened his eyes and faced it — but he was still looking at a stretch of mundanely blank wall.

他三次走过那个地方，激动得心咚咚地跳着，然后，他睁开眼睛转向它可眼前还是一段普通的白墙。

I ask the reader to note that I, an Englishman who no longer lives in England and can't spend more than six months at a stretch in any other European country, home to America as to a country more stimulating than depressing.

这里，我提请读者注意，我，一个英国人，不再居住英国了，我也无法一连在任何一个欧洲国家住 6个月以上，把美国当成家，把它看作一个更给人以激励而不是使人消沉的国家。