These limitations also lessened the effectiveness of the semaphore, a modern precursor to the electrictelegraph.
这些限制也削弱了旗语（电报的先驱）的作用。
2
The electrictelegraph being quicker than the wind, the vessels receive the news in time to take their directions.
电报的速度比风暴的移动更快，通过电报接受到的相关信息可以及时地获得风暴的去向。
3
During this time period, the Massachusetts-born, Yale-educated Morse (who began his career as a painter), worked to develop an electrictelegraph of his own.