at a stretch

基本解释

"It's the only excuse I have to get outside for four hours at a stretch ," he told Hearst magazines.
他告诉赫斯特杂志说：“这是我可以外出一连四个小时的唯一理由。”
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Once someone is buckled in, the chair spins like a midway ride, clockwise and counterclockwise for as long as 10 minutes at a stretch.
把人固定在上面，椅子就开始像游乐场设施一样旋转起来，一会顺时针一会逆时针，10分钟为一次。
Most industries and offices rely on massive power generators because electricity is often shut off for hours at a stretch, even in prime business and industrial areas.
由于频繁停电，即使在繁华的商业区和繁忙的工业区，很多工厂和办公楼仍然需要安装大型发电机来保持供电。

The woman had to travel overseas once a month for three or four exhausting days at a stretch.
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Like most nannies, though, the virtual babysitter will work for only eight hours or so at a stretch.
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