Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration. 在溴化反应过程中存在分子结构重排, 即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化.
Accompanying the peripatetic Secretary of State on his shuttle diplomacy marathons.伴随四处奔走的国务卿于穿梭外交的马拉松旅途上....a hectic, peripatetic life full of people and parties.整天疲于周旋、忙于应酬的紧张生活Her father was in the army and the family...
You hussy, how can you talk in that way?你这个鬼丫头, 你怎么这样说话?The gold hoop earrings Richard said made her look like a hussy and a gold bracelet.戴上那对金圈耳环(理查德说她戴了像个轻佻女子)和金手镯.She is a brazen hussy.她是个厚颜无耻的贱妇....
John McEnroe beat Jimmy Connors with the most complete display of artistry the game had ever seen.约翰·麦肯罗将球技发挥得淋漓尽致，从而击败了吉米·康纳斯，这在比赛中前所未见。Connors went down ( to Becker ) by three sets to one.康纳斯以叁负一胜输 ( 给贝克尔 ) 了.The full ...
You can chat to other people who are online.你可以和其他在线的人聊天。Try to support each other when one of you is feeling down.当有人觉得情绪低落时，要努力相互打气。After sixteen years of marriage they have grown bored with each other.结婚16年后，他们已经渐渐彼此厌...
区是两个邻近界标之间的区域.A region is an area lying between two adjacent landmarks.何以说它们是界标?In what sense are they landmarks?结论: 从上切牙到食道镜检查的界标和所报道的测量方法在以往的研究中已经被测量和标准化.Conclusions: Historically, landmark and report measurements in e...