每隔一定距离，就建一个烽火台，敌人接近时，发出警报。
Beacon towers are built at certain intervals to give the alarm if enemies approach.
为控制托盘以稳定速度下滑，避免撞击，在滚筒线上每隔一定距离设置一套阻尼系统。
To control the tray down a steady pace to avoid collision, in the drum line at intervals of a certain distance from one set of damping system.
在瑞典，游客们根本不用劳神到处去寻找电话，主要街道和公路上每隔一定距离便会有一个电话亭。
A traveler never needs to search for a telephone is Sweden: telephone booths are placed at regular intervals along the main streets and highways.
每隔一定距离就建造一座烽火台，用来传递军情在长城的整个军事防御体系中，这一切都起着非常重要的作用。
Beacon towers were also built at fixed intervals for passing on military information. All these indicate the important role of the Great Wall in military defense.
这些船每隔一定的距离就会被锚定，它们承载着桥的重量。
The boats are anchored at regular distances and they carry the weight of the bridge.
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.
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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