to have Scottish ancestry祖籍苏格兰The family has traced its ancestry to the Norman invaders.这个家族将自己的世系追溯到诺曼征服者.Their ancestry settled the land in 1856.他们的祖辈1856年在这块土地上定居下来....
As the nation continued to mourn, the new President of South Africa paid his own tribute.举国仍在哀悼之际，南非新任总统也表达了自己的怀念之情。They called the event 'a tribute to heroes', which was a nice touch...他们把这一活动称为“向英雄致敬”，这可是加分之举...
吡喃不是芳香的, 但眬英嗡离子是.Pyran is not aromatic, but the phrylium ion is.报道了氯化锌催化合成正辛基 -D- 吡喃葡萄糖苷反应机理的研究,考察了影响产物构型的因素.The mechanism to synthesize the octyl - D - glucopyranoside catalyzed by zinc chloride is suggested.0.2%α - 吡喃酮...