In ancient China, hand fans were almost the only ones to help people keep cool.

在古代中国，手扇几乎是唯一的帮助人们保持凉爽的工具。

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I reach down and feel something cool in my hand.

我俯下身来，感到手里有一些凉爽的东西。

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On the one hand, youth is equated with the ability to identify the cool new thing and be truly in-touch with what's up and coming, not to mention facile with technology.

一方面，年轻被视为等同于发现炫酷新事物并真正领会新趋势和潮流的能力，更不用说年轻人对科技的反应更加灵敏。

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I put Helen's hand under the cool water and formed the word w-a-t-e-r in her other hand.

VOA: special.2009.11.08

America may not be as aggressive as it has been in the recent past, but Obama's record -- the surfeit of caution regarding Syria aside -- suggests it would be a fatal error to test this cool hand in the White House.

CNN: Does North Korea think U.S. going soft?

After "Cool Hand Luke" (1967), in which he played the egg-eating malcontented title character, he turned to directing, earning raves for his behind-the-camera work on "Rachel, Rachel" (1968), starring his wife.

CNN: Paul Newman dies at 83

Handled in a ham-handed manner, you have yourself a Cool Hand Luke failure to communicate.

FORBES: Charlie Sheen: Talent That Can Be Managed IF You Know How.