形容词
中文翻译：近似的
同义词：
['near', 'approximately', 'roughly']
例句：
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1. The distance between the two citiesis approximately 500 kilometers.
这两个城市之间的距离大约是500公里。
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2.The temperature in this area is approximately20 degrees Celsius.
这个地区的温度大约是20摄氏度。
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3. The estimateof the population is approximately 2 million.
人口估计大约是200万人。