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...
She wore a sleeveless silk dress.她身穿一袭无袖真丝连衣裙。This is the season for sleeveless dresses.现在是穿无袖连衣裙的时候了.A: I'm looking for a sleeveless blouse for my girlfriend.我正在为我女朋友物色一条无袖短衫....