In practice, it is very difficult, and at times arguably impossible, to adopt the point of view of an ideal observer.

在实践中，是非常困难的，有时甚至可以说是不可能的，通过对理想观察者的角度。

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The engineering practice shows that taking higher-order inertia link as state observer of super heater steam temperature is feasible and in point.

工程实践表明：采用高阶惯性环节作为过热器蒸汽温度的状态观测器是可行的，适用的。

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"This feels much more like attacks staged in the past by other al Qaeda affiliates, rather than another attempt to exchange hostages for ransom, as has often been AQIM's practice, " said Andrew Lebovich, a long-time observer of AQIM currently in Senegal.

CNN: STORY HIGHLIGHTS