I stopped at the square and got out to stretch my legs.

我在广场处停下来，下车活动活动腿脚。

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WHEN Charlotte Hobbs decided to teach her 11-year-old pupil about the "imaginary" maths needed to work out the square root of a negative number, she knew it would be a stretch.

当夏洛特·霍布斯决定教她11岁的学生用来计算负数平方根的虚数时，她知道这是一个艰巨的任务。

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Meanwhile, near the northeastern Chinese city of Dalian, officials said around 500 fishing vessels were using absorbents and dispersants to help soak up oil on a 73 square mile stretch of ocean.

与此同时，在中国东北城市大连附近，相关官员说，大约500艘渔船正使用吸附物和分散剂帮助清理散布在73平方英里海域的石油。

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The resumption lasted only 13 balls, but in that time Lumb produced a great catch, sprinting 20 yards along the square leg boundary before diving full stretch to take Paul Stirling's pull shot.

BBC: England through as rain wipes out Ireland match