In the Knowledge Economy era, Chinese high-tech industry is faced with great challenge.
在知识经济时代，我国高技术产业面临着巨大的挑战。
The aerospace industry is the most risk and challenge high-tech fields.
航天工业是最具风险和挑战的高科技领域之一。
The aerospace industry is the most risk and challenge high-tech fields.
航天工业是最具风险和挑战的高科技领域之一。
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