In developed countries, youth unemployment can be efficiently controlled because active employment security measures have been taken to promote the youth to get employed.

发达国家之所以能够较为有效地控制青年失业率，主要是因为实施了积极的就业保障措施来促进青年就业。

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As many queue devices can be added to the job queue as needed to efficiently utilize the system resources, while maintaining a controlled spooling environment.

可以根据需要在作业队列中添加任意数量的队列设备，从而高效地利用系统资源，同时维持可控的假脱机环境。

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Major savings that could be achieved by integrating technological systems efficiently with structure where conditions of construction can be controlled have not been realized.

原本通过综合系统与施工状况能得以控制的结构有效地结合可以取得的主要储备并没有实现。

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