They have an itch to travel abroad.
他们渴望去国外旅行。
Many people have an itch for excitement.
很多人渴望刺激。
Go on, I know you have an itch to tell me.
快点，我知道你迫不及待地想告诉我。
That — for those who have had an itch they can't quite reach — would be a minor medical miracle.
对于那些有某种愿望却无法实现的人来说，那将是一个小小的医学奇迹。
And that - for those who have had an itch they can't quite reach - would be a minor medical miracle.
而那对于任何有过自己不容易够到的瘙痒的人来说都会是一个小小的医学奇迹。
Previous studies have shown that STT neurons can be activated with the application of an itch-producing chemical like histamine, and that the neurons send that itch sensation to the brain.
这些神经元可以将痛觉、温度以及触觉传导至大脑。 （以前的研究表明，给予产生瘙痒的感觉像组胺之类的物质后可以激活STT，而且这些神经元可以将那些痒觉传导至大脑。）
This is partly because scientists have tediously traditionally thought that an itch was a less intense form of pain.
部分原因是科学家们一直认为瘙痒是强烈疼痛的一种。
Scientists have shown scratching helps relieve an itch as it blocks activity in some spinal cord nerve cells that transmit the sensation to the brain.
脊髓丘脑束神经细胞在传导痛觉中同样起主要作用，但疼痛时抓挠却不会止痛，其原因目前仍不知。
Scientists have shown scratching helps relieve an itch as it blocks activity in some spinal cord nerve cells that transmit the sensation to the brain.
脊髓丘脑束神经细胞在传导痛觉中同样起主要作用，但疼痛时抓挠却不会止痛，其原因目前仍不知。
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