A partial view of Space Shuttle Atlantis' payload bay, vertical stabiliser, orbital manoeuvring system pods and docking mechanism are seen with the Earth in the background.

阿特兰蒂斯穿梭机装载区局部视图，尾脊轨道操作系统打开，对接机构显现，背景是地球。

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Taking the economics as a background, it is revealed that the common systems mechanism behind various nonlinear problems is the acting mechanism of complex mega-systems.

本文还以经济学为背景，论述了各种非线性问题背后所蕴藏的共同系统机制就是复杂巨系统的作用机制。

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Background Oxidative stress has been proposed as a mechanism linking the poor placental perfusion characteristic of preeclampsia with the clinical manifestations of the disorder.

背景胎盘灌注差是先兆子痫的特征，有人提出氧化应激是将胎盘灌注差与该病的临床表现相联系的一种机制。

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The attack has caused huge embarrassment to the Afghan government, which claims that it has put in place a stringent mechanism for verification and background checks of all those seeking to join the police or the Afghan army, the BBC's Bilal Sarwary reports from Kabul.

BBC: Policewoman who killed US aide in Kabul 'is Iranian'