As with learning anything else, one needs to learn professional knowledge not only from books but also from practice.

如同学习别的东西一样，一个人既要从书本上，又要从实践中学习专业知识。

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The installation of video cameras, tracking devices and other monitoring tools can also help deter workers from pilfering, but employers should first review local laws on the practice.

摄像头、跟踪装置和其他监视工具的安装可以帮助制止员工的盗窃行为，但雇主们在实践中应首先回顾当地法律。

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It has proved by practice that the method from this paper is not only feasible but also has application value.

实践证明，本文提出的方法在技术上可行，在实际中有一定的应用价值。

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But he's also had more practice from the rough, averaging 3.3 shots per round from the tall stuff compared with 2.4 swings per round from there last season.

WSJ: Tiger Woods Should Credit His Return to No. 1 on Improved Putt

Federally funded scientists can also derive stem cells, after informed consent, from aborted fetuses, but this practice is not without controversy.

CNN: NIH publishes draft guidelines for stem cell research