In graphite sheets, carbon atoms bond together in rings.石墨层中的碳原子相互连接形成碳环。More normal auroral rings had been previously imaged around Saturn.更多正常的土星环行极光被拍摄到.When the bell rings, more than 1,000 children spill from classro...
This driving mode allows you to move off in third gear to reduce wheel-spin in icy conditions.在这个驾驶模式下你可以挂3挡起步，以减少轮子在结冰路面上打滑的现象。Itemise your gear and mark major items with your name and post code.详细登记你的个人物品,在重要物品上标明你的姓名和...
You'll never quite get rid of every last bit of grit.无法把所有的沙砾都清除干净。I pretended to rub a fleck of grit from one eye.我假装拭去一只眼睛里的沙粒。He felt tiny bits of grit and sand peppering his knees.他感到细小的沙砾不断打在膝盖上。...