America is rightfully worried about its sinking competitiveness, and does indeed need to improve its education system.

美国对自己竞争力下降的担忧不无道理，它也确实需要改进它的教育体系。

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From subgrade sinking, construction methods and structure system, the paper analyzes reasons for vehicle bump at bridge head, and advances measures to avoid it.

从路基沉降、施工方法和结构体系上对桥头跳车病害进行原因分析，探讨并提出减少桥头跳车的措施。

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This paper analyses the operation principle of the device model, determines the value of the pull force of sinking mattress winch and the optimum speed parameter of the system.

本文分析装置模型的动作机理，确定系统中沉排绞车拉力、速度最佳参数，并就改善工况运行条件的体系结构作了较深入的探讨。

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But, in a system which was sinking deeper under pressure, their best was never going to be enough, no matter how hard they tried.

BBC: Death on the Wards revisited

However, many big developers will likely wait to see the initial reaction to BlackBerry 10 before sinking money into creating apps for the new system.

CNN: With BlackBerry 10, struggling phone maker eyes comeback