窗户外边是一块草地,高高的草随风摇摆。The windows overlooked a lawn of tall waving grass.甲板上所有的装置、窗户、舱口盖和门都已经关牢了。All deck fittings, windows, hatches and doors had been fastened.前门锁上了,所有窗户都关严了。The front door is locked and all the windows ar...
碳化植物残余通常是丰富的.Carbonized plant remains are commonly abundant.它是阳光与大气中的碳化氢和氧化氮作用的结果.It is the result of sunlight reacting with hydrocarbons and nitrogen oxides in the atmosphere.叙述了PI原丝的碳化和石墨化过程.The carbonization and the g...