When you see a picture of Earth, such as from a space station, you see how incredibly thin the protective atmosphere is, this thin film which was made by life itself over time.

当你从太空站看到地球的照片时，你会看到保护气层是多么的薄，这种薄膜是由生命本身随着时间的推移而形成的。

With ground coffee, they'll often pack it in a protective atmosphere, but once you open that bag and air gets in, the clock's ticking and you might have one or two days to enjoy it at its best.

对于磨碎的咖啡，他们通常会将其包装在保护性环境中，但是一旦您打开袋子并且空气进入，时钟就在滴答作响，您可能有一两天的时间来享受它的最佳状态。