Balloons

例句:

• At other times, free balloons are liberated, carrying sets of automatic registering instruments. 佚名. 神奇的知识之书.
• An air space of two feet is left between the cover and the balloons. 威廉·亨利·杜利特. 世纪发明.
• Germany meantime was intensely interested in Count Zeppelin’s dirigible balloons, which, although as long as a battle-ship, had flown with great success. 鲁伯特·萨金特·荷兰. 历史性发明.
• Two captive balloons had been floated to show the course and also to give an indication of the proper altitude to maintain. 鲁伯特·萨金特·荷兰. 历史性发明.
• Thinking the English slow to take up the interest in balloons, he wrote that we should not suffer pride to prevent our p rogress in science. 李贝. 西洋科学史.
• Wireless messages have been successfully sent from aeroplanes, balloons and submarine vessels, and the naval vessels of all nations are kept in easy communication by this method. 佚名. 神奇的知识之书.
• In communicating between points on land, poles of great height can be used, or captive balloons. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• At these elevated points, whether upon the masts of ships, upon poles or balloons, condensing surfaces of metal or other conductor of electricity are located. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Small experimental balloons, containing not men, but recording instruments, have gone as high as twenty-two miles. 赫伯特·乔治·威尔斯. 世界史纲.
• The frame is further strengthened and the balloons stayed by a network of aluminium wire, and the entire frame covered with a soft ramie fibre. 威廉·亨利·杜利特. 世纪发明.
• For temporary service, as in the case of military operations, the antenna is frequently attached to captive balloons or kites, and so suspended high in air. 鲁伯特·萨金特·荷兰. 历史性发明.

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