The custom dates back to the time when the horse was the main means of getting about, and you kept to the left so as to leave your sword arm free to defend yourself.
这种习俗可以追溯到以马为主要交通工具的时代。那时，在路的左边骑马可以空出右手，以便持剑自卫。
The custom dates back to the time when the horse was the main means of getting about, and you kept to the left so as to leave your sword arm free to defend yourself.
这种习俗可以追溯到以马为主要交通工具的时代。那时，在路的左边骑马可以空出右手，以便持剑自卫。
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