这个国家已经预备好要一跃成为世界上可替代能源业的领军人物，同时也成为世界上最大的二氧化碳排放国。

The country is poised to be at once the world's leader in alternative energy — and its leading emitter of C02.

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日本一跃成为教育出口国。

Japan has become an exporter of education.

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近年来，中国已一跃成为仅次于澳大利亚的全球第二大煤炭出口国。

China had emerged in recent years as the world's second-largest coal exporter, behind Australia.

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