In the evening, open windows and use fans to create a cross-breeze, circulating cooler evening/night air through the rooms.

在晚上，打开窗户或者用风扇让空气保持对流，让凉快的晚风能够穿过房子。

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However, there is also an eddy of cooler water (purple) circulating counterclockwise at the top of the Loop Current.

不过，在洋流的顶端还出现一个逆时针方向旋转的水流(紫色部分)，而且温度较低。

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The real trick there is to get free cooling days, which means on a cooler day we’re just circulating chilled water and opening a window, so to speak.

真正的挑战是实现免冷却日，比方说，在凉快一些的日子里，我们会仅让冷却水循环并打开窗户。

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