美国俚语:a cool head 冷静的头脑
英语课
a cool head 冷静的头脑（the ability to stay calm and think clearly in a difficult situation）
例句：
These are high pressure situations and you have to keep a cool head.
在高压力的情况下你必须保持冷静的头脑。
Professional trustees are trained to handle hostility 1 and usually manage to keep a cool head.
专业的受托人受过训练来处理敌意，他们通常都能保持冷静的头脑。
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收听单词发音 1
hostility
n.敌对，敌意；抵制［pl.］交战，战争
参考例句：
There is open hostility between the two leaders.两位领导人表现出公开的敌意。
His hostility to your plan is well known.他对你的计划所持的敌意是众所周知的。
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俚语