In addition to sampling error, question wording and practical difficulties in conducting surveys can introduce error or bias into the findings of survey data.

除了采样误差，在调查中提问的措辞和一些实际困难也会导致在采集数据中产生误差或偏差。

The practical difficulties extend beyond education.

实际的困难远不止教育问题。

In addition to these practical difficulties, amnesty is a bad approach conceptually.

除了这些很现实的困难,从对观念的影响来看, 搞特赦也并非良策.

There are practical difficulties in determining how much is relevant to the forester.

究竟有多少对于林业工作者是适用的,实际上就难说了.

But these methods have not been widely adopted, largely due to practical difficulties.

但是这些方法并没有被广泛接受，这在很大程度上是由于实践的困难。

The development of Xinjiang national higher education has many practical difficulties and man-made problems, such as the slipping in educational quality.

新疆民族高等教育的发展存在着许多现实的困难和人为造成的问题，教育质量明显滑坡。