169. The external and internal interference interrupts my interpretation at short intervals.

内部和外部干涉以很短的间隔打扰我翻译。

When the instrument is situated at more than 700 miles from the earthquake centre, the graphic record shows three waves arriving one after the other at short intervals.

如果把这种仪器安装在距震源700多英里远的地方，曲线记录就能显示出前后相同的这3种地震波。

Another kind of meadow or bog occurs on densely timbered hillsides where small perennial streams have been dammed at short intervals by fallen trees.

另一种草地或沼泽地出现在树木茂密的山坡上， 那里的小溪流每隔很短的时间就会被倒下的树木截断。

This he proceeded to do at short intervals, until, after what seemed a very long time, he was rewarded by hearing footsteps ascending the stairs, and presently a knock upon the door.

他每隔很短的时间就开始这样做， 直到似乎过了很长时间之后， 他才听到上楼梯的脚步声和敲门声。

Meanwhile he watched mankind march on, like a train of pack-horses on the Snake River, tumbling from one morass into another, and at short intervals, for no reason but temper, falling to butchery, like Cain.

与此同时，他看着人类继续前行，就像蛇河上的一队驮马，从一个沼泽地翻滚到另一个沼泽地，每隔很短的时间，除了脾气暴躁之外，就像该隐一样落入屠杀。