Some of that can be attributed to people living longer, but family size remains the driving factor.

部分原因是人们的寿命延长，但家庭规模仍然是驱动因素。

And today, it's the second bestselling game console in Nintendo's history, and continues to be a driving factor of its revenue.

今天，它是任天堂历史上第二畅销的游戏机，并继续成为其收入的驱动因素。

But part of the driving factor behind effective change in the past was that we had hard data about the direct negative impacts of badly handled medication.

但过去有效改变背后的部分驱动因素是，我们有关于药物处理不当的直接负面影响的确凿数据。

Technology has been the driving factor in changing society for the better for hundreds of years, boosting living standards and fortunate communications and convenience for people throughout the world.

几百年来，科技一直是推动社会向好的方向发展的驱动因素，它提高了全世界人民的生活水平和促进了通讯便利。