通过环氧化和氧化就得到外消旋的含十八个碳的昆虫返动激素.Epoxidation and oxidation gave the racemic C 18 - juvenile hormone.发现旋光基质有外消旋作用.Racemization is found with optically active substrates.外消旋体是不旋光的.The racemate is optically inactive....
The Martins sold their house for about 1.4 million pounds.马丁夫妇把他们的房子卖了140万英镑。Hm, maybe you could give him the new Ricky Martins.嗨.也许你可以给他最新的瑞奇马丁的CD唱片.You owe me five far things , say the bells of St Martins.你欠我五法辛,圣玛汀的钟声...
Employees have liberty to use all the museum facilities.雇员获准使用所有博物馆的设备。Do no through fear of poverty surrender liberty.不要因为怕贫苦而放弃自由。Liberty consists in the power of doing that which is permitted by law.自由就是做法律许可做的事情的权力。....
The stationmaster pounced and wrestled the gun from him.站长猛扑过去，奋力夺下他手中的枪。He toddled over and pounced on the chicken.他蹒跚走来,伸手猛抓小鸡.Before I could get the pigeon the cat pounced.未等我逮到鸽子，猫就猛扑了上去。'That's much too su...