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/ˈrektæŋɡl/
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n. 矩形，长方形
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• I taught my cousin how to fold a piece of paper into a neat rectangle. 我教表弟如何将一张纸折成整整齐齐的长方形。
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• Do you know how to draw a robot with rectangles and circles? 你知道怎么用长方形和圆形画成机器人吗？
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19
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four
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/fɔ:/
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num. 四
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• There are four seasons in a year. They are spring, summer, fall and winter. 一年有四季，分別是春、夏、秋、冬。
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• A square has four straight equal sides and four right angles. 正方形有四条等长的边以及四个九十度的角。
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• at four 四点钟
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20
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angle
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/ˈæŋɡl/
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n. 角，角度
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• Try to look at the event from a different angle. 试着从不同的角度来看这件事。
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21
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straight
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/streit/
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adj. 直的；正直的
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• He drew a straight line on the paper. 他在纸上画了一条直线。
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• straight hair 直发
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22
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pattern
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/ˈpætən/
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