旅行的意义：
By traveling abroad people can discover new ways of thinking and different lifestyles, which makes them more tolerant and open-minded.
表达“对彼此上头”的英语竟然有这么多
初步上头：
They are attracted by each other.
They have a crush on each other.
They are drawn to each other.
They feel a spark between each other.
轻度上头：
They are obsessed with each other.
They are crazy about each other.
They are addicted to each other.
They are deeply into each other.
They can't get enough of each other.
中度上头：
They are falling for each other.
They are head over heels for each other.
They are madly in love with each other.
They lose themselves in each other.
They only have eyes for each other.
重度上头：
They are fasinated by each other.
They are captivated by each other.
They are absorbed in each other.