几十年来，物理学家们努力想把二者统一到一起。

For decades physicists have tried to put the two together.

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而全国的其他地方，在明年也将统一到实行欧iv标准。

The rest of China will move to Euro IV next year.

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而全国的其他地方，在明年也将统一到实行欧iv标准。

The rest of China will move to Euro IV next year.

youdao