如果你喜欢游泳的话，给自己设定一个时间或距离进行挑战。

If you like swimming, set yourself a distance or time challenge.

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古代的时候，人们每隔一定的距离就会设定驿站。

In ancient time, courier station would be established at regular intervals.

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琴颈可以分离（更为方便）也可调节，所以琴弦和指板之间的距离吉他手可以根据自己的喜好来设定。

The neck was detachable (making it easier to service) and adjustable, so the player could set the distance between the strings and fretboard to his or her liking.

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