研究发现三月的平均冰覆盖量大约是一千五百万平方公里。
The study found an average ice cover of about fifteen million square kilometers in March.
中国是一个农业大国，有约1.33百万平方公里的农田。
China is an agricultural country, which has about 1.33 million square kilometers farmland.
他们的扩张占地几乎十五百万平方英里。
Their expansion extends over nearly fifteen million square miles.
他们在北京的中心商业区拥有1亿6千7百万平方英尺的办公室空间。
They have 16.7 million square feet of office space in Beijing's central business district.
他们在北京的中心商业区拥有1亿6千7百万平方英尺的办公室空间。
They have 16.7 million square feet of office space in Beijing's central business district.
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