单词：lava tree cast
熔岩树铸型
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Jack didn't feel like a happy camper anymore. Walking through the cold, thin air, he looked at thesnowmobiles parked near the hut. We don't know how to drive snowmobiles! Jackwhispered to Annie. We haven't trained foranything, including altitude sick
发表于:2018-12-10 / 阅读(37) / 评论(0)
汪培珽儿童英文分级书单《神奇树屋》
汪培珽儿童英文分级书单《神奇树屋》
Called the hellhole of creation, the Afar Triangle lies at the junction of three continental plates which spread further each year. The oldest living lava lake and one of the lowest points on the planet. Geologists here can study the process that for
发表于:2018-12-30 / 阅读(113) / 评论(0)
国家地理2007年
国家地理2007年