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1704946654
centre指更确切的“中心”、“中央”：
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1704946656
He placed the roses in the centre of the table．他把玫瑰花放在桌子中央。
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1704946658
The bull’s eye is in the centre of the target．靶心在靶子的中心。
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1704946660
After that I walked round the centre of the town．之后我在市中心一带走了走。
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1704946662
可用于引申意义：
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1704946664
She likes to be the centre of attention all the time．她喜欢一直是大家注意的中心。
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1704946666
Broadway is the theatrical centre of the United States．百老汇是美国的戏剧中心。
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1704946668
cultural centre 文化中心
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1704946670
financial centre 金融中心
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1704946672
in the midst of也表示“在……中间（当中）”：
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1704946674
They wanted the picnic to be in the midst of the forest．他们希望野餐在森林中举行。
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1704946676
I saw him in the midst of the crowd．我看见他在那一群人中间。
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1704946678
She took ill in the midst of the ceremony．在举行仪式的过程中她生病了。
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1704946681
607 million—billion—trillion
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1704946683
million指百万（后面一般不加-s）：
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1704946685
The population of Scotland was nearly two million．苏格兰的人口近200万。
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1704946687
She made two million dollars in one year．她一年赚了200万美元。
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1704946689
在个别情况下可加-s：
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1704946691
Millions of lives have been saved．数以百万计的生命得救了。
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1704946693
His idea is worth millions．他的主意值多少百万。
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billion现在都指“十亿”（通常不加-s）：
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1704946697
A human adult has about 100 billion cells．成人身体约有1000亿个细胞。
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1704946699
3 billion dollars 30亿美元
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over 1.3 billion people 13亿多人
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