a cool hand的用法和样例：
- I didn't khow that the fellow was a cool hand.
- The sergeant is a cool hand;shells were exploding close to our position but he just continued to read his book and sip his tea.
- He fretted until Scarlett who had only been waiting for such an opportunity laid a cool hand on his forehead and said: “Now, sweetheart, I shall be vexed if you take on so.
- He is a cool hand.
- My new car cost me a cool thousand pounds.
a cool hand的相关资料：