1924年，他说服英国政府用他最新发明的短波无线电技术来建立无线电台链，环绕世界。
In 1924 he convinced the British government to encircle the world with a chain of wireless stations using the latest technology that he had devised, shortwave radio.
他知道一架普通的铝制飞机无法不加油环绕世界。
He knew a normal plane made of aluminum metal could not make a trip around the world without adding fuel.
我也造访过世界上20%的国家和环绕世界2次。
I've also visited 20% of the world's countries and circled the globe twice.
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