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The boat was so small that no one believed it could stay afloat for very long.
VOA: special.2010.03.06
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He couldn't stay still very long.
他无法在同一处呆很久
耶鲁公开课 - 欧洲文明课程节选
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If you leave your iPod, it's not going to stay there for very long.
如果你把 iPod 丢在地上,估计静止不了多久
耶鲁公开课 - 基础物理课程节选