The configure synthesis evaluation of anti-air position used AHP and the fuzzy synthesis evaluation method.

防空阵地配置综合评价运用层次分析和模糊评判两种方法。

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Basically, the head-down, legs-in-the-air position has become standard in modern medicine mainly because it gives doctors direct and unrestricted access.

基本上，头朝下腿伸在空中被认为是标准的姿势。

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However, if the planet is in a good position, astronomers look for three key things: water, air and rock.

然而如果这颗行星处于很好的位置，天文学家会寻找三样关键的东西：水、空气和岩石。

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Squats jumps were used to leap into the air from a sitting position, and are energetically expensive.

BBC: Earth News - How gibbons leap huge distances revealed by scientists

But countless statements -- some from military personnel -- appeared to contradict the Air Force's revised position.

CNN: Poll: U.S. hiding knowledge of aliens

Parts of inexplicable circles, drawn or incised on the light-colored wall behind him, give an air of happenstance to his position.

NEWYORKER: Art