解决了最初的一些问题之后，终于成功地制造出了大量丙酮。After some initial problems, acetone was successfully produced in quantity.这两个氨基酸从丙酮酸获得它们的碳架.These two amino acids derive their carbon skeletons from pyruvate.将乙酰丙酮铁, 苯基B- 萘胺及磷脂通过40目筛加入.The fer...
Friends passed the word that the miners wanted to see him.朋友们传话说矿工们想见他。Miners have complained bitterly that the government did not fulfill their promises...矿工们愤愤不平地抱怨说政府没有履行诺言。Union leaders had urged miners to vote in fa...