寻找不在地图上的隐形人 There are often no maps of rural areas of Rwanda 卢旺达的农村地区往往没有地图 “There are about two billion people in the world who don’t appear on a proper map,” says Ivan Gayton from the charity Humanitarian OpenStreetMap. “世界上大约有20亿人没有出现在正确的地图上，”慈善机构“人道主义开放式街道地图”的伊万·盖顿说。 “It&……Read More
月度归档： 2020 年 7 月
Lesson2 Part2
Bituminous coal—a dense coal, usually black, sometimes dark brown, often with well-defined bands of bright and dull material, used primarily as fuel in steam-electric power generation, with substantial quantities also used for heat arid power applications in manufacturing and to make coke. 烟煤—一种致密的煤……Read More
Core of a gas planet seen for the first time
首次看到气体星球的核心 The planetary core orbits very close to its parent star 行星核心的轨道非常接近其母恒星 Astronomers have found a previously unseen type of object circling a distant star. 天文学家发现了一种以前看不见的围绕着一颗遥远恒星的天体。 It could be the core of a gas world like Jupiter, offering an unprecedented glimpse inside one of these ……Read More
Lesson2 Part1
Types and Application of coal Coal is a fossil fuel formed in swamp ecosystems where plant remains were saved by water and mud from oxidization and biodegradation. 煤是沼泽生态系统中形成的化石燃料，在沼泽生态系统中，植物残骸在水和泥浆的氧化和生物降解作用中被保存下来。 Coal is a readily combustible black or brownish-black rock. It is a sedimentary roc……Read More
A ‘mass experiment’ for the climate
气候的大规模试验 Has the pandemic helped individuals and leaders get any closer to tackling the environmental crisis? 大流行是否帮助个人和领导者进一步解决环境危机？ “I was so worried about the dangers of going too far,” says Sally Capp, Lord Mayor of Melbourne, when she now thinks about her pre-pandemic leadership on the environm……Read More