With a telescope you can see the huge crater of Ve -suvius.用望远镜你能看到巨大的维苏威火山口。Mauna Loa awoke from a 25 year silence in July 1975, filling its summit - pit crater with lava.莫纳罗亚火山在1975年7月又从沉睡了25年的状态下苏醒过来了, 山顶上的火山口充满了熔岩.Gu...
The constitution also confers large powers on Brazil's 25 constituent states.宪法还赋予巴西的25个成员州很大的权力。Caffeine is the active constituent of drinks such as tea and coffee.咖啡因是茶、咖啡之类饮品中的活性成分。Glycerol is a constituent of al...