Part I is concerned in the content including the definition, the production and propagation of jets, the jet asymmetries and unified schemes.

第一部分所涉及的内容包括喷流的定义、产生和传播；

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Many are concerned about the violent content of some computer games, especially those seen in video arcades.

很多人担心一些电脑游戏的暴力内容，尤其是在电子游戏室里看到的那些游戏。

《柯林斯英汉双解大词典》

The next article in this series is concerned with accessing message payloads, which enable you to process messages based on their content.

本系列的下一篇文章将讨论访问消息负载，以便可以根据消息的内容对消息进行处理。

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Today, it is expected that NetFlix will lose the Starz content in February, and many bears are concerned that competitors will pick up the content and put NetFlix at a disadvantage.

FORBES: NetFlix: Tipping Point or Overreaction?

Bears tend to be concerned about competition in domestic streaming, the high costs of content and the losses the company is generating overseas.

FORBES: Netflix Off Sharply As Merrill Cuts Rating After Big Rally

Networks, film companies and other entertainment powerhouses that hold the rights to content, though concerned about a coming shift in how viewers see shows and events, hold more cards than the music industry did when Steve Jobs negotiated with record label executives.

FORBES: Is TV Apple's Unsolvable Riddle? Hmmm...