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“How do you know when the ground is
【作者】:网站采编【关键词】:【摘要】:Robert,an experienced sky diver(跳伞运动员),was readying him-self for a jump when he spotted(发现)another man outfitted(装备)todive wearing dark glasses,carrying a white cane(手杖)and holding aseeing-eye dog(导盲犬)by a leash(皮
Robert,an experienced sky diver(跳伞运动员),was readying him-self for a jump when he spotted(发现)another man outfitted(装备)todive wearing dark glasses,carrying a white cane(手杖)and holding aseeing-eye dog(导盲犬)by a leash(皮带)。Shocked that the blind man
文章来源：《矿业装备》 网址: http://www.kyzbzz.cn/qikandaodu/2020/0910/463.html
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