The researchers insist that this lower mortality rate is not the result of the breast augmentation procedure itself, but rather of a double selection bias.

研究人员认为，这一较低的死亡率不是隆胸本身的结果，而是由于双重选择偏倚。

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Activating a selection (by double-clicking with the mouse, or pressing the spacebar) causes the corresponding item to be opened in the editor.

激活某一个选择(通过双击鼠标，或按下空格键)会让对应的项目在编辑器中打开。

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Selection of pumping method is important to the enhancement of the performances of double clad fiber lasers.

选择合适抽运方式对提高双包层光纤激光器的性能具有重要的意义。

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Warm scones with double Devonshire cream and preserves are accompanied by a beautiful selection of sweets, seasonal fruit and savory dishes such as roasted lamb loin on grilled pita and peekytoe crab salad with avocado and fresh coriander on toasted brioche.

CNN: Five great American tearooms