In 1941, the train would have been pulled by a steam engine.1941年，火车本可以由蒸汽机车拉动。Who invented the steam engine?谁发明了蒸汽机？Who invented the steam engine?谁发明了蒸汽机?...
Once its impurities had settled, the oil could be graded.一旦杂质沉淀下去，油就可以分级了。A filter will remove most impurities found in water.过滤器会滤掉水中的大部分杂质。Oil is refined to remove naturally occurring impurities.油经过提炼去除天然存在的杂质。...
Of these minerals, kaolinite, illite and chlorite are commonest.在这些矿物中, 高岭石, 伊利石和绿泥石最常见.Rock fragments, including volcanics, are common, and the matrix consists largely of kaolin and illite.常见有岩石碎块, 包括火山岩屑, 基质大部分为高龄土和伊利石...
He faced the press, initially, in a somewhat subdued mood.他最初面对媒体时情绪有点忧郁。He had initially thought Byrnes too soft with the Russians.原先他还以为伯恩斯对俄国人过于手软呢。It is necessary initially to classify the headaches into certain type...