Well its very nice to see the very well orchestrated J-20 introduction and its first flight.

哦，非常高兴能看到组织得如此之好的J - 20介绍及其首飞。

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In the introduction to the theoretical framework, emphasis is laid on the theories of the British linguist and translation theorist J.

文中着重介绍了英国语言学家和翻译理论家卡特·福德J。

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CHEN X H. Structural lightweight design and topology optimization technology introduction [J]. China High-Tech Enterprises, 2013, (19) : 29-30.

[6]陈新华。结构轻量化设计与拓扑优化技术简介[J]。中国高新技术企业，2013，(19)：29 - 30。

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Mr Barrie argues that the introduction of significant numbers of J-20-based fighters would "pose an increased challenge to other regional powers, and to US forces in Asia Pacific".

BBC: China extending military reach

In his introduction to the new edition of Socialism from Laissez-Faire Books, Peter J.

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