Major changes in core libraries can also present a problem when trying to achieve binary compatibility.

当尝试获得二进制兼容性时，核心程序库的重要变化也会引发问题。

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Construction temperature cracks, as a major problem influencing the quality of locks, there is no effective solution to it at present.

工程施工中温度裂缝，作为影响水闸质量的一大难题，目前尚无有效的解决方法。

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At present, the phenomenon of library reader loss is a major problem faced by libraries. The paper has analyzed the reasons of this problem and put forward countermeasures to improve this problem.

当前图书馆读者流失的现象是图书馆界面临的一大问题，分析了这一问题的原因，并提出了相应的改善对策。

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Given that using an H-1B visa is often the only practical way to hire a foreign national to work long-term in the U.S. that would present a major problem for growth and innovation.

FORBES: Requiring Foreigners to Be Paid More Than Americans