Travel itch is the feeling a traveller gets when they’ve sat still for too long, when they know there’s so much more to be seen and done, it's the desire to explore. Their feet are getting antsy and ready to move on, to pack their backpacks and explore more of this beautiful world.

　　“旅游痒”指的是喜爱旅游的人太长时间没有出去时心里的一种感觉。他们知道外面的世界还有很多值得看和值得做的事情，那是一种想要去探索的欲望。他们的双脚已经蠢蠢欲动，准备打好背包，开启下一段旅程，继续探索这个美丽的世界。

　　This term is probably a derivation from seven-year itch, which suggests that happiness in a relationship declines after around year seven of a marriage and people start to get sick of one another. The phrase has now expanded to indicate cycles of dissatisfaction not only in interpersonal relationships but in any situation such as working a full-time job or buying a house, where a decrease in happiness and satisfaction is often seen over long periods of time.

　　这个说法大概是从“七年之痒”的表达衍生而来，七年之痒指的是，结婚7年之后，婚姻中的幸福感开始下降，双方开始对彼此心生厌恶。如今，七年之痒不光用来形容婚姻等人际关系，还可以用在很多别的场合，比如一份全职工作或者买了一个房子，经过很长的一段时间后，幸福感和满意度通常都会下降。