headspace

noun

/ˈhedspeɪs/

[uncountable]

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the amount of air or empty space that is left above the contents of a container before it is sealed (= tightly closed)顶空，顶隙（密封之前容器内物品上方的空气或空间）
- Proper sample collection techniques include use of a glass tube with minimal headspace remaining after collection.合适的样品收集技术包括使用玻璃管，收集后保留最小的顶部空间。
(informal) the way you think or feel about something 思维方式；感受方式
- Whenever you read a book, you're entering the writer's headspace.读一本书，如同进入了作者的思维空间。
(informal) time to think clearly without any pressure （清醒而无压力的）思考时间
- I could do with a bit of headspace just to think about what I'm doing. 我需要一点独立思考的时间想想我正在做的事。