coolheaded

1.a cool negotiator; play it cool; keep cool; remained coolheaded in the crisis; one of the most nerveless champions in the history of the tournament.

冷静的谈判者；冷静的处理；保持冷静；中保持头脑冷静；锦标赛史上最沉着的冠军之一。

2.A life-or-death situation can reveal whether somebody is panicky or coolheaded, whether the person is selfish or thinks about others. This also is true for a nation-state.

头的表现展示一个人是惊惶还是沉着，自私还是有爱心，同理，对一个国野也是一样。